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heimdal/lib/gssapi/test_context.c
Luke Howard e0bb9c10ca gssapi: credential store extensions (#451) 
Implement the GSS-API credential store API extensions defined by MIT here:

https://k5wiki.kerberos.org/wiki/Projects/Credential_Store_extensions

Note: we kill off gss_acquire_cred_ext() here. This was never a public API,
although mechanisms could have implemented it and I briefly used it in my
BrowserID prototype mechanism. gss_acquire_cred_ext_from() occupies the place
in the dispatch table where gss_acquire_cred_ext() used to, but this structure
was never visible outside Heimdal (i.e. it is only used by internal
mechanisms);

(Mechanisms that need to accept arbitrary key/value dictionaries from
applications should now implement gss_acquire_cred_from().)
2019-01-03 14:38:39 -06:00

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/*
* Copyright (c) 2006 - 2008 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* 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.
*
* 3. Neither the name of KTH nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY KTH AND ITS 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 KTH OR ITS 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 "krb5/gsskrb5_locl.h"
#include <err.h>
#include <getarg.h>
#include <gssapi.h>
#include <gssapi_krb5.h>
#include <gssapi_spnego.h>
#include <gssapi_ntlm.h>
#include "test_common.h"
static char *type_string;
static char *mech_string;
static char *mechs_string;
static char *ret_mech_string;
static char *client_name;
static char *client_password;
static int dns_canon_flag = -1;
static int mutual_auth_flag = 0;
static int dce_style_flag = 0;
static int wrapunwrap_flag = 0;
static int iov_flag = 0;
static int aead_flag = 0;
static int getverifymic_flag = 0;
static int deleg_flag = 0;
static int policy_deleg_flag = 0;
static int server_no_deleg_flag = 0;
static int ei_flag = 0;
static char *client_ccache = NULL;
static char *client_keytab = NULL;
static char *gsskrb5_acceptor_identity = NULL;
static char *session_enctype_string = NULL;
static int client_time_offset = 0;
static int server_time_offset = 0;
static int max_loops = 0;
static char *limit_enctype_string = NULL;
static int version_flag = 0;
static int verbose_flag = 0;
static int help_flag = 0;
static krb5_context context;
static krb5_enctype limit_enctype = 0;
static struct {
const char *name;
gss_OID oid;
} o2n[] = {
{ "krb5", NULL /* GSS_KRB5_MECHANISM */ },
{ "spnego", NULL /* GSS_SPNEGO_MECHANISM */ },
{ "ntlm", NULL /* GSS_NTLM_MECHANISM */ },
{ "sasl-digest-md5", NULL /* GSS_SASL_DIGEST_MD5_MECHANISM */ }
};
static void
init_o2n(void)
{
o2n[0].oid = GSS_KRB5_MECHANISM;
o2n[1].oid = GSS_SPNEGO_MECHANISM;
o2n[2].oid = GSS_NTLM_MECHANISM;
o2n[3].oid = GSS_SASL_DIGEST_MD5_MECHANISM;
}
static gss_OID
string_to_oid(const char *name)
{
size_t i;
for (i = 0; i < sizeof(o2n)/sizeof(o2n[0]); i++)
if (strcasecmp(name, o2n[i].name) == 0)
return o2n[i].oid;
errx(1, "name '%s' not unknown", name);
}
static void
string_to_oids(gss_OID_set *oidsetp, gss_OID_set oidset,
gss_OID_desc *oidarray, size_t oidarray_len,
char *names)
{
char *name;
char *s;
if (names[0] == '\0') {
*oidsetp = GSS_C_NO_OID_SET;
return;
}
oidset->elements = &oidarray[0];
if (strcasecmp(names, "all") == 0) {
if (sizeof(o2n)/sizeof(o2n[0]) > oidarray_len)
errx(1, "internal error: oidarray must be enlarged");
for (oidset->count = 0; oidset->count < oidarray_len; oidset->count++)
oidset->elements[oidset->count] = *o2n[oidset->count].oid;
} else {
for (oidset->count = 0, name = strtok_r(names, ", ", &s);
name != NULL;
oidset->count++, name = strtok_r(NULL, ", ", &s)) {
if (oidset->count >= oidarray_len)
errx(1, "too many mech names given");
oidset->elements[oidset->count] = *string_to_oid(name);
}
}
*oidsetp = oidset;
}
static const char *
oid_to_string(const gss_OID oid)
{
size_t i;
for (i = 0; i < sizeof(o2n)/sizeof(o2n[0]); i++)
if (gss_oid_equal(oid, o2n[i].oid))
return o2n[i].name;
return "unknown oid";
}
static void
loop(gss_OID mechoid,
gss_OID nameoid, const char *target,
gss_cred_id_t init_cred,
gss_ctx_id_t *sctx, gss_ctx_id_t *cctx,
gss_OID *actual_mech,
gss_cred_id_t *deleg_cred)
{
int server_done = 0, client_done = 0;
int num_loops = 0;
OM_uint32 maj_stat, min_stat;
gss_name_t gss_target_name;
gss_buffer_desc input_token, output_token;
OM_uint32 flags = 0, ret_cflags, ret_sflags;
gss_OID actual_mech_client;
gss_OID actual_mech_server;
*actual_mech = GSS_C_NO_OID;
flags |= GSS_C_INTEG_FLAG;
flags |= GSS_C_CONF_FLAG;
if (mutual_auth_flag)
flags |= GSS_C_MUTUAL_FLAG;
if (dce_style_flag)
flags |= GSS_C_DCE_STYLE;
if (deleg_flag)
flags |= GSS_C_DELEG_FLAG;
if (policy_deleg_flag)
flags |= GSS_C_DELEG_POLICY_FLAG;
input_token.value = rk_UNCONST(target);
input_token.length = strlen(target);
maj_stat = gss_import_name(&min_stat,
&input_token,
nameoid,
&gss_target_name);
if (GSS_ERROR(maj_stat))
err(1, "import name creds failed with: %d", maj_stat);
input_token.length = 0;
input_token.value = NULL;
while (!server_done || !client_done) {
num_loops++;
gsskrb5_set_time_offset(client_time_offset);
maj_stat = gss_init_sec_context(&min_stat,
init_cred,
cctx,
gss_target_name,
mechoid,
flags,
0,
NULL,
&input_token,
&actual_mech_client,
&output_token,
&ret_cflags,
NULL);
if (GSS_ERROR(maj_stat))
errx(1, "init_sec_context: %s",
gssapi_err(maj_stat, min_stat, mechoid));
if (maj_stat & GSS_S_CONTINUE_NEEDED)
;
else
client_done = 1;
gsskrb5_get_time_offset(&client_time_offset);
if (client_done && server_done)
break;
if (input_token.length != 0)
gss_release_buffer(&min_stat, &input_token);
gsskrb5_set_time_offset(server_time_offset);
maj_stat = gss_accept_sec_context(&min_stat,
sctx,
GSS_C_NO_CREDENTIAL,
&output_token,
GSS_C_NO_CHANNEL_BINDINGS,
NULL,
&actual_mech_server,
&input_token,
&ret_sflags,
NULL,
deleg_cred);
if (GSS_ERROR(maj_stat))
errx(1, "accept_sec_context: %s",
gssapi_err(maj_stat, min_stat, actual_mech_server));
gsskrb5_get_time_offset(&server_time_offset);
if (output_token.length != 0)
gss_release_buffer(&min_stat, &output_token);
if (maj_stat & GSS_S_CONTINUE_NEEDED)
;
else
server_done = 1;
}
if (output_token.length != 0)
gss_release_buffer(&min_stat, &output_token);
if (input_token.length != 0)
gss_release_buffer(&min_stat, &input_token);
gss_release_name(&min_stat, &gss_target_name);
if (deleg_flag || policy_deleg_flag) {
if (server_no_deleg_flag) {
if (*deleg_cred != GSS_C_NO_CREDENTIAL)
errx(1, "got delegated cred but didn't expect one");
} else if (*deleg_cred == GSS_C_NO_CREDENTIAL)
errx(1, "asked for delegarated cred but did get one");
} else if (*deleg_cred != GSS_C_NO_CREDENTIAL)
errx(1, "got deleg_cred cred but didn't ask");
if (gss_oid_equal(actual_mech_server, actual_mech_client) == 0)
errx(1, "mech mismatch");
*actual_mech = actual_mech_server;
if (max_loops && num_loops > max_loops)
errx(1, "num loops %d was lager then max loops %d",
num_loops, max_loops);
if (verbose_flag) {
printf("server time offset: %d\n", server_time_offset);
printf("client time offset: %d\n", client_time_offset);
printf("num loops %d\n", num_loops);
}
}
static void
wrapunwrap(gss_ctx_id_t cctx, gss_ctx_id_t sctx, int flags, gss_OID mechoid)
{
gss_buffer_desc input_token, output_token, output_token2;
OM_uint32 min_stat, maj_stat;
gss_qop_t qop_state;
int conf_state;
input_token.value = "foo";
input_token.length = 3;
maj_stat = gss_wrap(&min_stat, cctx, flags, 0, &input_token,
&conf_state, &output_token);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_wrap failed: %s",
gssapi_err(maj_stat, min_stat, mechoid));
maj_stat = gss_unwrap(&min_stat, sctx, &output_token,
&output_token2, &conf_state, &qop_state);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_unwrap failed: %s",
gssapi_err(maj_stat, min_stat, mechoid));
gss_release_buffer(&min_stat, &output_token);
gss_release_buffer(&min_stat, &output_token2);
#if 0 /* doesn't work for NTLM yet */
if (!!conf_state != !!flags)
errx(1, "conf_state mismatch");
#endif
}
#define USE_CONF 1
#define USE_HEADER_ONLY 2
#define USE_SIGN_ONLY 4
#define FORCE_IOV 8
/* NO_DATA comes from <netdb.h>; we don't use it here; we appropriate it */
#ifdef NO_DATA
#undef NO_DATA
#endif
#define NO_DATA 16
static void
wrapunwrap_iov(gss_ctx_id_t cctx, gss_ctx_id_t sctx, int flags, gss_OID mechoid)
{
krb5_data token, header, trailer;
OM_uint32 min_stat, maj_stat;
gss_qop_t qop_state;
int conf_state, conf_state2;
gss_iov_buffer_desc iov[6];
unsigned char *p;
int iov_len;
char header_data[9] = "ABCheader";
char trailer_data[10] = "trailerXYZ";
char token_data[16] = "0123456789abcdef";
memset(&iov, 0, sizeof(iov));
if (flags & USE_SIGN_ONLY) {
header.data = header_data;
header.length = 9;
trailer.data = trailer_data;
trailer.length = 10;
} else {
header.data = NULL;
header.length = 0;
trailer.data = NULL;
trailer.length = 0;
}
token.data = token_data;
token.length = 16;
iov_len = sizeof(iov)/sizeof(iov[0]);
memset(iov, 0, sizeof(iov));
iov[0].type = GSS_IOV_BUFFER_TYPE_HEADER | GSS_IOV_BUFFER_TYPE_FLAG_ALLOCATE;
if (header.length != 0) {
iov[1].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY;
iov[1].buffer.length = header.length;
iov[1].buffer.value = header.data;
} else {
iov[1].type = GSS_IOV_BUFFER_TYPE_EMPTY;
iov[1].buffer.length = 0;
iov[1].buffer.value = NULL;
}
iov[2].type = GSS_IOV_BUFFER_TYPE_DATA;
if (flags & NO_DATA) {
iov[2].buffer.length = 0;
} else {
iov[2].buffer.length = token.length;
}
iov[2].buffer.value = token.data;
if (trailer.length != 0) {
iov[3].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY;
iov[3].buffer.length = trailer.length;
iov[3].buffer.value = trailer.data;
} else {
iov[3].type = GSS_IOV_BUFFER_TYPE_EMPTY;
iov[3].buffer.length = 0;
iov[3].buffer.value = NULL;
}
if (dce_style_flag) {
iov[4].type = GSS_IOV_BUFFER_TYPE_EMPTY;
} else {
iov[4].type = GSS_IOV_BUFFER_TYPE_PADDING | GSS_IOV_BUFFER_TYPE_FLAG_ALLOCATE;
}
iov[4].buffer.length = 0;
iov[4].buffer.value = 0;
if (dce_style_flag) {
iov[5].type = GSS_IOV_BUFFER_TYPE_EMPTY;
} else if (flags & USE_HEADER_ONLY) {
iov[5].type = GSS_IOV_BUFFER_TYPE_EMPTY;
} else {
iov[5].type = GSS_IOV_BUFFER_TYPE_TRAILER | GSS_IOV_BUFFER_TYPE_FLAG_ALLOCATE;
}
iov[5].buffer.length = 0;
iov[5].buffer.value = 0;
maj_stat = gss_wrap_iov(&min_stat, cctx, dce_style_flag || flags & USE_CONF, 0, &conf_state,
iov, iov_len);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_wrap_iov failed");
token.length =
iov[0].buffer.length +
iov[1].buffer.length +
iov[2].buffer.length +
iov[3].buffer.length +
iov[4].buffer.length +
iov[5].buffer.length;
token.data = emalloc(token.length);
p = token.data;
memcpy(p, iov[0].buffer.value, iov[0].buffer.length);
p += iov[0].buffer.length;
memcpy(p, iov[1].buffer.value, iov[1].buffer.length);
p += iov[1].buffer.length;
memcpy(p, iov[2].buffer.value, iov[2].buffer.length);
p += iov[2].buffer.length;
memcpy(p, iov[3].buffer.value, iov[3].buffer.length);
p += iov[3].buffer.length;
memcpy(p, iov[4].buffer.value, iov[4].buffer.length);
p += iov[4].buffer.length;
memcpy(p, iov[5].buffer.value, iov[5].buffer.length);
p += iov[5].buffer.length;
assert(p - ((unsigned char *)token.data) == token.length);
if ((flags & (USE_SIGN_ONLY|FORCE_IOV)) == 0) {
gss_buffer_desc input, output;
input.value = token.data;
input.length = token.length;
maj_stat = gss_unwrap(&min_stat, sctx, &input,
&output, &conf_state2, &qop_state);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_unwrap from gss_wrap_iov failed: %s",
gssapi_err(maj_stat, min_stat, mechoid));
gss_release_buffer(&min_stat, &output);
} else {
maj_stat = gss_unwrap_iov(&min_stat, sctx, &conf_state2, &qop_state,
iov, iov_len);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_unwrap_iov failed: %x %s", flags,
gssapi_err(maj_stat, min_stat, mechoid));
}
if (conf_state2 != conf_state)
errx(1, "conf state wrong for iov: %x", flags);
gss_release_iov_buffer(&min_stat, iov, iov_len);
free(token.data);
}
static void
wrapunwrap_aead(gss_ctx_id_t cctx, gss_ctx_id_t sctx, int flags, gss_OID mechoid)
{
gss_buffer_desc token, assoc, message = GSS_C_EMPTY_BUFFER;
gss_buffer_desc output;
OM_uint32 min_stat, maj_stat;
gss_qop_t qop_state;
int conf_state, conf_state2;
char assoc_data[9] = "ABCheader";
char token_data[16] = "0123456789abcdef";
if (flags & USE_SIGN_ONLY) {
assoc.value = assoc_data;
assoc.length = 9;
} else {
assoc.value = NULL;
assoc.length = 0;
}
token.value = token_data;
token.length = 16;
maj_stat = gss_wrap_aead(&min_stat, cctx, dce_style_flag || flags & USE_CONF,
GSS_C_QOP_DEFAULT, &assoc, &token,
&conf_state, &message);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_wrap_aead failed");
if ((flags & (USE_SIGN_ONLY|FORCE_IOV)) == 0) {
maj_stat = gss_unwrap(&min_stat, sctx, &message,
&output, &conf_state2, &qop_state);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_unwrap from gss_wrap_aead failed: %s",
gssapi_err(maj_stat, min_stat, mechoid));
} else {
maj_stat = gss_unwrap_aead(&min_stat, sctx, &message, &assoc,
&output, &conf_state2, &qop_state);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_unwrap_aead failed: %x %s", flags,
gssapi_err(maj_stat, min_stat, mechoid));
}
if (output.length != token.length)
errx(1, "plaintext length wrong for aead");
else if (memcmp(output.value, token.value, token.length) != 0)
errx(1, "plaintext wrong for aead");
if (conf_state2 != conf_state)
errx(1, "conf state wrong for aead: %x", flags);
gss_release_buffer(&min_stat, &message);
gss_release_buffer(&min_stat, &output);
}
static void
getverifymic(gss_ctx_id_t cctx, gss_ctx_id_t sctx, gss_OID mechoid)
{
gss_buffer_desc input_token, output_token;
OM_uint32 min_stat, maj_stat;
gss_qop_t qop_state;
input_token.value = "bar";
input_token.length = 3;
maj_stat = gss_get_mic(&min_stat, cctx, 0, &input_token,
&output_token);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_get_mic failed: %s",
gssapi_err(maj_stat, min_stat, mechoid));
maj_stat = gss_verify_mic(&min_stat, sctx, &input_token,
&output_token, &qop_state);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_verify_mic failed: %s",
gssapi_err(maj_stat, min_stat, mechoid));
gss_release_buffer(&min_stat, &output_token);
}
static void
empty_release(void)
{
gss_ctx_id_t ctx = GSS_C_NO_CONTEXT;
gss_cred_id_t cred = GSS_C_NO_CREDENTIAL;
gss_name_t name = GSS_C_NO_NAME;
gss_OID_set oidset = GSS_C_NO_OID_SET;
OM_uint32 junk;
gss_delete_sec_context(&junk, &ctx, NULL);
gss_release_cred(&junk, &cred);
gss_release_name(&junk, &name);
gss_release_oid_set(&junk, &oidset);
}
/*
*
*/
static struct getargs args[] = {
{"name-type",0, arg_string, &type_string, "type of name", NULL },
{"mech-type",0, arg_string, &mech_string, "mech type (name)", NULL },
{"mech-types",0, arg_string, &mechs_string, "mech types (names)", NULL },
{"ret-mech-type",0, arg_string, &ret_mech_string,
"type of return mech", NULL },
{"dns-canonicalize",0,arg_negative_flag, &dns_canon_flag,
"use dns to canonicalize", NULL },
{"mutual-auth",0, arg_flag, &mutual_auth_flag,"mutual auth", NULL },
{"client-ccache",0, arg_string, &client_ccache, "client credentials cache", NULL },
{"client-keytab",0, arg_string, &client_keytab, "client keytab", NULL },
{"client-name", 0, arg_string, &client_name, "client name", NULL },
{"client-password", 0, arg_string, &client_password, "client password", NULL },
{"limit-enctype",0, arg_string, &limit_enctype_string, "enctype", NULL },
{"dce-style",0, arg_flag, &dce_style_flag, "dce-style", NULL },
{"wrapunwrap",0, arg_flag, &wrapunwrap_flag, "wrap/unwrap", NULL },
{"iov", 0, arg_flag, &iov_flag, "wrap/unwrap iov", NULL },
{"aead", 0, arg_flag, &aead_flag, "wrap/unwrap aead", NULL },
{"getverifymic",0, arg_flag, &getverifymic_flag,
"get and verify mic", NULL },
{"delegate",0, arg_flag, &deleg_flag, "delegate credential", NULL },
{"policy-delegate",0, arg_flag, &policy_deleg_flag, "policy delegate credential", NULL },
{"server-no-delegate",0, arg_flag, &server_no_deleg_flag,
"server should get a credential", NULL },
{"export-import-cred",0, arg_flag, &ei_flag, "test export/import cred", NULL },
{"gsskrb5-acceptor-identity", 0, arg_string, &gsskrb5_acceptor_identity, "keytab", NULL },
{"session-enctype", 0, arg_string, &session_enctype_string, "enctype", NULL },
{"client-time-offset", 0, arg_integer, &client_time_offset, "time", NULL },
{"server-time-offset", 0, arg_integer, &server_time_offset, "time", NULL },
{"max-loops", 0, arg_integer, &max_loops, "time", NULL },
{"version", 0, arg_flag, &version_flag, "print version", NULL },
{"verbose", 'v', arg_flag, &verbose_flag, "verbose", NULL },
{"help", 0, arg_flag, &help_flag, NULL, NULL }
};
static void
usage (int ret)
{
arg_printusage (args, sizeof(args)/sizeof(*args),
NULL, "service@host");
exit (ret);
}
int
main(int argc, char **argv)
{
int optidx = 0;
OM_uint32 min_stat, maj_stat;
gss_ctx_id_t cctx, sctx;
void *ctx;
gss_OID nameoid, mechoid, actual_mech, actual_mech2;
gss_cred_id_t client_cred = GSS_C_NO_CREDENTIAL, deleg_cred = GSS_C_NO_CREDENTIAL;
gss_name_t cname = GSS_C_NO_NAME;
gss_buffer_desc credential_data = GSS_C_EMPTY_BUFFER;
gss_OID_desc oids[4];
gss_OID_set_desc mechoid_descs;
gss_OID_set mechoids = GSS_C_NO_OID_SET;
gss_key_value_element_desc client_cred_elements[2];
gss_key_value_set_desc client_cred_store;
setprogname(argv[0]);
init_o2n();
if (krb5_init_context(&context))
errx(1, "krb5_init_context");
cctx = sctx = GSS_C_NO_CONTEXT;
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
usage(1);
if (help_flag)
usage (0);
if(version_flag){
print_version(NULL);
exit(0);
}
argc -= optidx;
argv += optidx;
if (argc != 1)
usage(1);
if (dns_canon_flag != -1)
gsskrb5_set_dns_canonicalize(dns_canon_flag);
if (type_string == NULL)
nameoid = GSS_C_NT_HOSTBASED_SERVICE;
else if (strcmp(type_string, "hostbased-service") == 0)
nameoid = GSS_C_NT_HOSTBASED_SERVICE;
else if (strcmp(type_string, "krb5-principal-name") == 0)
nameoid = GSS_KRB5_NT_PRINCIPAL_NAME;
else
errx(1, "%s not supported", type_string);
if (mech_string == NULL)
mechoid = GSS_KRB5_MECHANISM;
else
mechoid = string_to_oid(mech_string);
if (mechs_string == NULL) {
/*
* We ought to be able to use the OID set of the one mechanism
* OID given. But there's some breakage that conspires to make
* that fail though it should succeed:
*
* - the NTLM gss_acquire_cred() refuses to work with
* desired_name == GSS_C_NO_NAME
* - gss_acquire_cred() with desired_mechs == GSS_C_NO_OID_SET
* does work here because we happen to have Kerberos
* credentials in check-ntlm, and the subsequent
* gss_init_sec_context() call finds no cred element for NTLM
* but plows on anyways, surprisingly enough, and then the
* NTLM gss_init_sec_context() just works.
*
* In summary, there's some breakage in gss_init_sec_context()
* and some breakage in NTLM that conspires against us here.
*
* We work around this in check-ntlm and check-spnego by adding
* --client-name=user1@${R} to the invocations of this test
* program that require it.
*/
oids[0] = *mechoid;
mechoid_descs.elements = &oids[0];
mechoid_descs.count = 1;
mechoids = &mechoid_descs;
} else {
string_to_oids(&mechoids, &mechoid_descs,
oids, sizeof(oids)/sizeof(oids[0]), mechs_string);
}
if (gsskrb5_acceptor_identity) {
/* XXX replace this with cred store, but test suites will need work */
maj_stat = gsskrb5_register_acceptor_identity(gsskrb5_acceptor_identity);
if (maj_stat)
errx(1, "gsskrb5_acceptor_identity: %s",
gssapi_err(maj_stat, 0, GSS_C_NO_OID));
}
if (client_password && (client_ccache || client_keytab)) {
errx(1, "password option mutually exclusive with ccache or keytab option");
}
if (client_password) {
credential_data.value = client_password;
credential_data.length = strlen(client_password);
}
client_cred_store.count = 0;
client_cred_store.elements = client_cred_elements;
if (client_ccache) {
client_cred_store.elements[client_cred_store.count].key = "ccache";
client_cred_store.elements[client_cred_store.count].value = client_ccache;
client_cred_store.count++;
}
if (client_keytab) {
client_cred_store.elements[client_cred_store.count].key = "client_keytab";
client_cred_store.elements[client_cred_store.count].value = client_keytab;
client_cred_store.count++;
}
if (client_name) {
gss_buffer_desc cn;
cn.value = client_name;
cn.length = strlen(client_name);
maj_stat = gss_import_name(&min_stat, &cn, GSS_C_NT_USER_NAME, &cname);
if (maj_stat)
errx(1, "gss_import_name: %s",
gssapi_err(maj_stat, min_stat, GSS_C_NO_OID));
}
if (client_password) {
maj_stat = gss_acquire_cred_with_password(&min_stat,
cname,
&credential_data,
GSS_C_INDEFINITE,
mechoids,
GSS_C_INITIATE,
&client_cred,
NULL,
NULL);
if (GSS_ERROR(maj_stat)) {
if (mechoids != GSS_C_NO_OID_SET && mechoids->count == 1)
mechoid = &mechoids->elements[0];
else
mechoid = GSS_C_NO_OID;
errx(1, "gss_acquire_cred_with_password: %s",
gssapi_err(maj_stat, min_stat, mechoid));
}
} else {
maj_stat = gss_acquire_cred_from(&min_stat,
cname,
GSS_C_INDEFINITE,
mechoids,
GSS_C_INITIATE,
client_cred_store.count ? &client_cred_store
: GSS_C_NO_CRED_STORE,
&client_cred,
NULL,
NULL);
if (GSS_ERROR(maj_stat))
errx(1, "gss_acquire_cred: %s",
gssapi_err(maj_stat, min_stat, GSS_C_NO_OID));
}
if (limit_enctype_string) {
krb5_error_code ret;
ret = krb5_string_to_enctype(context,
limit_enctype_string,
&limit_enctype);
if (ret)
krb5_err(context, 1, ret, "krb5_string_to_enctype");
}
if (limit_enctype) {
if (client_cred == NULL)
errx(1, "client_cred missing");
maj_stat = gss_krb5_set_allowable_enctypes(&min_stat, client_cred,
1, &limit_enctype);
if (maj_stat)
errx(1, "gss_krb5_set_allowable_enctypes: %s",
gssapi_err(maj_stat, min_stat, GSS_C_NO_OID));
}
loop(mechoid, nameoid, argv[0], client_cred,
&sctx, &cctx, &actual_mech, &deleg_cred);
if (verbose_flag)
printf("resulting mech: %s\n", oid_to_string(actual_mech));
if (ret_mech_string) {
gss_OID retoid;
retoid = string_to_oid(ret_mech_string);
if (gss_oid_equal(retoid, actual_mech) == 0)
errx(1, "actual_mech mech is not the expected type %s",
ret_mech_string);
}
/* XXX should be actual_mech */
if (gss_oid_equal(mechoid, GSS_KRB5_MECHANISM)) {
time_t sc_time;
gss_buffer_desc authz_data;
gss_buffer_desc in, out1, out2;
krb5_keyblock *keyblock, *keyblock2;
krb5_timestamp now;
krb5_error_code ret;
ret = krb5_timeofday(context, &now);
if (ret)
errx(1, "krb5_timeofday failed");
/* client */
maj_stat = gss_krb5_export_lucid_sec_context(&min_stat,
&cctx,
1, /* version */
&ctx);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_krb5_export_lucid_sec_context failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
maj_stat = gss_krb5_free_lucid_sec_context(&maj_stat, ctx);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_krb5_free_lucid_sec_context failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
/* server */
maj_stat = gss_krb5_export_lucid_sec_context(&min_stat,
&sctx,
1, /* version */
&ctx);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_krb5_export_lucid_sec_context failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
maj_stat = gss_krb5_free_lucid_sec_context(&min_stat, ctx);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gss_krb5_free_lucid_sec_context failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
maj_stat = gsskrb5_extract_authtime_from_sec_context(&min_stat,
sctx,
&sc_time);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gsskrb5_extract_authtime_from_sec_context failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
if (sc_time > now)
errx(1, "gsskrb5_extract_authtime_from_sec_context failed: "
"time authtime is before now: %ld %ld",
(long)sc_time, (long)now);
maj_stat = gsskrb5_extract_service_keyblock(&min_stat,
sctx,
&keyblock);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "gsskrb5_export_service_keyblock failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
krb5_free_keyblock(context, keyblock);
maj_stat = gsskrb5_get_subkey(&min_stat,
sctx,
&keyblock);
if (maj_stat != GSS_S_COMPLETE
&& (!(maj_stat == GSS_S_FAILURE && min_stat == GSS_KRB5_S_KG_NO_SUBKEY)))
errx(1, "gsskrb5_get_subkey server failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
if (maj_stat != GSS_S_COMPLETE)
keyblock = NULL;
else if (limit_enctype && keyblock->keytype != limit_enctype)
errx(1, "gsskrb5_get_subkey wrong enctype");
maj_stat = gsskrb5_get_subkey(&min_stat,
cctx,
&keyblock2);
if (maj_stat != GSS_S_COMPLETE
&& (!(maj_stat == GSS_S_FAILURE && min_stat == GSS_KRB5_S_KG_NO_SUBKEY)))
errx(1, "gsskrb5_get_subkey client failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
if (maj_stat != GSS_S_COMPLETE)
keyblock2 = NULL;
else if (limit_enctype && keyblock->keytype != limit_enctype)
errx(1, "gsskrb5_get_subkey wrong enctype");
if (keyblock || keyblock2) {
if (keyblock == NULL)
errx(1, "server missing token keyblock");
if (keyblock2 == NULL)
errx(1, "client missing token keyblock");
if (keyblock->keytype != keyblock2->keytype)
errx(1, "enctype mismatch");
if (keyblock->keyvalue.length != keyblock2->keyvalue.length)
errx(1, "key length mismatch");
if (memcmp(keyblock->keyvalue.data, keyblock2->keyvalue.data,
keyblock2->keyvalue.length) != 0)
errx(1, "key data mismatch");
}
if (session_enctype_string) {
krb5_enctype enctype;
ret = krb5_string_to_enctype(context,
session_enctype_string,
&enctype);
if (ret)
krb5_err(context, 1, ret, "krb5_string_to_enctype");
if (enctype != keyblock->keytype)
errx(1, "keytype is not the expected %d != %d",
(int)enctype, (int)keyblock2->keytype);
}
if (keyblock)
krb5_free_keyblock(context, keyblock);
if (keyblock2)
krb5_free_keyblock(context, keyblock2);
maj_stat = gsskrb5_get_initiator_subkey(&min_stat,
sctx,
&keyblock);
if (maj_stat != GSS_S_COMPLETE
&& (!(maj_stat == GSS_S_FAILURE && min_stat == GSS_KRB5_S_KG_NO_SUBKEY)))
errx(1, "gsskrb5_get_initiator_subkey failed: %s",
gssapi_err(maj_stat, min_stat, actual_mech));
if (maj_stat == GSS_S_COMPLETE) {
if (limit_enctype && keyblock->keytype != limit_enctype)
errx(1, "gsskrb5_get_initiator_subkey wrong enctype");
krb5_free_keyblock(context, keyblock);
}
maj_stat = gsskrb5_extract_authz_data_from_sec_context(&min_stat,
sctx,
128,
&authz_data);
if (maj_stat == GSS_S_COMPLETE)
gss_release_buffer(&min_stat, &authz_data);
memset(&out1, 0, sizeof(out1));
memset(&out2, 0, sizeof(out2));
in.value = "foo";
in.length = 3;
gss_pseudo_random(&min_stat, sctx, GSS_C_PRF_KEY_FULL, &in,
100, &out1);
gss_pseudo_random(&min_stat, cctx, GSS_C_PRF_KEY_FULL, &in,
100, &out2);
if (out1.length != out2.length)
errx(1, "prf len mismatch");
if (memcmp(out1.value, out2.value, out1.length) != 0)
errx(1, "prf data mismatch");
gss_release_buffer(&min_stat, &out1);
gss_pseudo_random(&min_stat, sctx, GSS_C_PRF_KEY_FULL, &in,
100, &out1);
if (out1.length != out2.length)
errx(1, "prf len mismatch");
if (memcmp(out1.value, out2.value, out1.length) != 0)
errx(1, "prf data mismatch");
gss_release_buffer(&min_stat, &out1);
gss_release_buffer(&min_stat, &out2);
in.value = "bar";
in.length = 3;
gss_pseudo_random(&min_stat, sctx, GSS_C_PRF_KEY_PARTIAL, &in,
100, &out1);
gss_pseudo_random(&min_stat, cctx, GSS_C_PRF_KEY_PARTIAL, &in,
100, &out2);
if (out1.length != out2.length)
errx(1, "prf len mismatch");
if (memcmp(out1.value, out2.value, out1.length) != 0)
errx(1, "prf data mismatch");
gss_release_buffer(&min_stat, &out1);
gss_release_buffer(&min_stat, &out2);
wrapunwrap_flag = 1;
getverifymic_flag = 1;
}
if (wrapunwrap_flag) {
wrapunwrap(cctx, sctx, 0, actual_mech);
wrapunwrap(cctx, sctx, 1, actual_mech);
wrapunwrap(sctx, cctx, 0, actual_mech);
wrapunwrap(sctx, cctx, 1, actual_mech);
}
if (iov_flag) {
wrapunwrap_iov(cctx, sctx, 0, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_HEADER_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|USE_HEADER_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|USE_HEADER_ONLY|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
/* works */
wrapunwrap_iov(cctx, sctx, 0, actual_mech);
wrapunwrap_iov(cctx, sctx, FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_SIGN_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|USE_SIGN_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_HEADER_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|USE_HEADER_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, USE_CONF|USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_HEADER_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|USE_HEADER_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|USE_HEADER_ONLY|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
/* works */
wrapunwrap_iov(cctx, sctx, NO_DATA, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_SIGN_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|USE_SIGN_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_HEADER_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_HEADER_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|USE_HEADER_ONLY, actual_mech);
wrapunwrap_iov(cctx, sctx, NO_DATA|USE_CONF|USE_HEADER_ONLY|FORCE_IOV, actual_mech);
}
if (aead_flag) {
wrapunwrap_aead(cctx, sctx, 0, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_CONF, actual_mech);
wrapunwrap_aead(cctx, sctx, FORCE_IOV, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_CONF|FORCE_IOV, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_CONF|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_aead(cctx, sctx, 0, actual_mech);
wrapunwrap_aead(cctx, sctx, FORCE_IOV, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_CONF, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_CONF|FORCE_IOV, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_SIGN_ONLY, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_SIGN_ONLY|FORCE_IOV, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_CONF|USE_SIGN_ONLY, actual_mech);
wrapunwrap_aead(cctx, sctx, USE_CONF|USE_SIGN_ONLY|FORCE_IOV, actual_mech);
}
if (getverifymic_flag) {
getverifymic(cctx, sctx, actual_mech);
getverifymic(cctx, sctx, actual_mech);
getverifymic(sctx, cctx, actual_mech);
getverifymic(sctx, cctx, actual_mech);
}
gss_delete_sec_context(&min_stat, &cctx, NULL);
gss_delete_sec_context(&min_stat, &sctx, NULL);
if (deleg_cred != GSS_C_NO_CREDENTIAL) {
gss_cred_id_t cred2 = GSS_C_NO_CREDENTIAL;
gss_buffer_desc cb;
if (verbose_flag)
printf("checking actual mech (%s) on delegated cred\n",
oid_to_string(actual_mech));
loop(actual_mech, nameoid, argv[0], deleg_cred, &sctx, &cctx, &actual_mech2, &cred2);
gss_delete_sec_context(&min_stat, &cctx, NULL);
gss_delete_sec_context(&min_stat, &sctx, NULL);
gss_release_cred(&min_stat, &cred2);
#if 0
/*
* XXX We can't do this. Delegated credentials only work with
* the actual_mech. We could gss_store_cred the delegated
* credentials *then* gss_add/acquire_cred() with SPNEGO, then
* we could try loop() with those credentials.
*/
/* try again using SPNEGO */
if (verbose_flag)
printf("checking spnego on delegated cred\n");
loop(GSS_SPNEGO_MECHANISM, nameoid, argv[0], deleg_cred, &sctx, &cctx,
&actual_mech2, &cred2);
gss_delete_sec_context(&min_stat, &cctx, NULL);
gss_delete_sec_context(&min_stat, &sctx, NULL);
gss_release_cred(&min_stat, &cred2);
#endif
/* check export/import */
if (ei_flag) {
maj_stat = gss_export_cred(&min_stat, deleg_cred, &cb);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "export failed: %s",
gssapi_err(maj_stat, min_stat, NULL));
maj_stat = gss_import_cred(&min_stat, &cb, &cred2);
if (maj_stat != GSS_S_COMPLETE)
errx(1, "import failed: %s",
gssapi_err(maj_stat, min_stat, NULL));
gss_release_buffer(&min_stat, &cb);
gss_release_cred(&min_stat, &deleg_cred);
if (verbose_flag)
printf("checking actual mech (%s) on export/imported cred\n",
oid_to_string(actual_mech));
loop(actual_mech, nameoid, argv[0], cred2, &sctx, &cctx,
&actual_mech2, &deleg_cred);
gss_release_cred(&min_stat, &deleg_cred);
gss_delete_sec_context(&min_stat, &cctx, NULL);
gss_delete_sec_context(&min_stat, &sctx, NULL);
#if 0
/* XXX See above */
/* try again using SPNEGO */
if (verbose_flag)
printf("checking SPNEGO on export/imported cred\n");
loop(GSS_SPNEGO_MECHANISM, nameoid, argv[0], cred2, &sctx, &cctx,
&actual_mech2, &deleg_cred);
gss_release_cred(&min_stat, &deleg_cred);
gss_delete_sec_context(&min_stat, &cctx, NULL);
gss_delete_sec_context(&min_stat, &sctx, NULL);
#endif
gss_release_cred(&min_stat, &cred2);
} else {
gss_release_cred(&min_stat, &deleg_cred);
}
}
empty_release();
krb5_free_context(context);
return 0;
}
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