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#include "config.h"
#define LIBSSH_STATIC
#include "torture.h"
#include <libssh/libssh.h>
#include <errno.h>
#include <fcntl.h>
#include <gssapi.h>
#include <pwd.h>
static int
sshd_setup(void **state)
{
torture_setup_sshd_server(state, false);
torture_update_sshd_config(state,
"GSSAPIAuthentication yes\n"
"GSSAPICleanupCredentials yes\n"
"GSSAPIStrictAcceptorCheck yes\n");
return 0;
}
static int
sshd_teardown(void **state)
{
assert_non_null(state);
torture_teardown_sshd_server(state);
return 0;
}
static int
session_setup(void **state)
{
struct torture_state *s = *state;
int verbosity = torture_libssh_verbosity();
struct passwd *pwd = NULL;
int rc;
pwd = getpwnam("bob");
assert_non_null(pwd);
rc = setuid(pwd->pw_uid);
assert_return_code(rc, errno);
s->ssh.session = ssh_new();
assert_non_null(s->ssh.session);
ssh_options_set(s->ssh.session, SSH_OPTIONS_LOG_VERBOSITY, &verbosity);
ssh_options_set(s->ssh.session, SSH_OPTIONS_HOST, TORTURE_SSH_SERVER);
ssh_options_set(s->ssh.session, SSH_OPTIONS_USER, TORTURE_SSH_USER_ALICE);
return 0;
}
static int
session_teardown(void **state)
{
struct torture_state *s = *state;
assert_non_null(s);
ssh_disconnect(s->ssh.session);
ssh_free(s->ssh.session);
return 0;
}
static void
torture_gssapi_auth(void **state)
{
struct torture_state *s = *state;
ssh_session session = s->ssh.session;
int rc;
rc = ssh_connect(session);
assert_ssh_return_code(session, rc);
/* No client credential */
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
/* No TGT */
"");
rc = ssh_userauth_gssapi(session);
assert_int_equal(rc, SSH_AUTH_DENIED);
torture_teardown_kdc_server(state);
/* Invalid host principal */
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/invalid.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/invalid.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
"echo bar | kinit alice");
rc = ssh_userauth_gssapi(session);
assert_int_equal(rc, SSH_AUTH_DENIED);
torture_teardown_kdc_server(state);
/* Valid */
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
"echo bar | kinit alice");
rc = ssh_userauth_gssapi(session);
assert_int_equal(rc, SSH_AUTH_SUCCESS);
torture_teardown_kdc_server(state);
}
static void
torture_gssapi_auth_client_identity(void **state)
{
struct torture_state *s = *state;
ssh_session session = s->ssh.session;
int rc;
rc = ssh_connect(session);
assert_ssh_return_code(session, rc);
/* Invalid client identity option */
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
"echo bar | kinit alice");
ssh_options_set(session, SSH_OPTIONS_GSSAPI_CLIENT_IDENTITY, "bob");
rc = ssh_userauth_gssapi(session);
assert_int_equal(rc, SSH_AUTH_DENIED);
torture_teardown_kdc_server(state);
/* Valid client identity option*/
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
"echo bar | kinit alice");
ssh_options_set(session, SSH_OPTIONS_GSSAPI_CLIENT_IDENTITY, "alice");
rc = ssh_userauth_gssapi(session);
assert_int_equal(rc, SSH_AUTH_SUCCESS);
torture_teardown_kdc_server(state);
}
static void
torture_gssapi_auth_server_identity(void **state)
{
struct torture_state *s = *state;
ssh_session session = s->ssh.session;
int rc;
rc = ssh_connect(session);
assert_ssh_return_code(session, rc);
/* Invalid server identity option */
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
"echo bar | kinit alice");
ssh_options_set(session,
SSH_OPTIONS_GSSAPI_SERVER_IDENTITY,
"invalid.libssh.site");
rc = ssh_userauth_gssapi(session);
assert_int_equal(rc, SSH_AUTH_ERROR);
torture_teardown_kdc_server(state);
/* Valid server identity option*/
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
"echo bar | kinit alice");
ssh_options_set(session,
SSH_OPTIONS_GSSAPI_SERVER_IDENTITY,
"server.libssh.site");
rc = ssh_userauth_gssapi(session);
assert_int_equal(rc, SSH_AUTH_SUCCESS);
torture_teardown_kdc_server(state);
}
static void
torture_gssapi_auth_delegate_creds(void **state)
{
struct torture_state *s = *state;
ssh_session session = s->ssh.session;
int rc;
OM_uint32 maj_stat, min_stat;
gss_cred_id_t client_creds = GSS_C_NO_CREDENTIAL;
gss_OID_set no_mechs = GSS_C_NO_OID_SET;
int t = 1;
ssh_options_set(session, SSH_OPTIONS_GSSAPI_DELEGATE_CREDENTIALS, &t);
rc = ssh_connect(session);
assert_ssh_return_code(session, rc);
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
"echo bar | kinit alice");
maj_stat = gss_acquire_cred(&min_stat,
GSS_C_NO_NAME,
GSS_C_INDEFINITE,
GSS_C_NO_OID_SET,
GSS_C_INITIATE,
&client_creds,
&no_mechs,
NULL);
assert_int_equal(GSS_ERROR(maj_stat), 0);
ssh_gssapi_set_creds(session, client_creds);
rc = ssh_userauth_gssapi(session);
assert_int_equal(rc, SSH_AUTH_SUCCESS);
gss_release_cred(&min_stat, &client_creds);
gss_release_oid_set(&min_stat, &no_mechs);
torture_teardown_kdc_server(state);
}
int
torture_run_tests(void)
{
int rc;
struct CMUnitTest tests[] = {
cmocka_unit_test_setup_teardown(torture_gssapi_auth,
session_setup,
session_teardown),
cmocka_unit_test_setup_teardown(torture_gssapi_auth_client_identity,
session_setup,
session_teardown),
cmocka_unit_test_setup_teardown(torture_gssapi_auth_server_identity,
session_setup,
session_teardown),
cmocka_unit_test_setup_teardown(torture_gssapi_auth_delegate_creds,
session_setup,
session_teardown),
};
ssh_init();
torture_filter_tests(tests);
rc = cmocka_run_group_tests(tests, sshd_setup, sshd_teardown);
ssh_finalize();
return rc;
}
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