sin/samba-mirror
1
0
Fork 0
mirror of https://github.com/samba-team/samba.git synced 2025-02-03 13:47:25 +03:00
Code

torture-krb5: Test accepting the ticket to ensure PAC is well-formed

Browse Source 
A future test will ask for impersonation to a different user, and
validate returned principal and the PAC matches that user.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11142
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
This commit is contained in:
Andrew Bartlett 2015-03-11 15:58:36 +13:00 committed by Günther Deschner
parent bc8b580659
commit a1b4a5d977
1 changed files with 134 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

135
source4/torture/krb5/kdc-canon.c
View File

@ -29,6 +29,10 @@
#include "source4/auth/kerberos/kerberos.h"
#include "source4/auth/kerberos/kerberos_util.h"
#include "lib/util/util_net.h"
#include "auth/auth.h"
#include "auth/auth_sam_reply.h"
#include "auth/gensec/gensec.h"
#include "param/param.h"
#define TEST_CANONICALIZE 0x0000001
#define TEST_ENTERPRISE 0x0000002
@ -87,6 +91,121 @@ struct torture_krb5_context {
TGS_REP tgs_rep;
};
struct pac_data {
const char *principal_name;
};
/*
* A helper function which avoids touching the local databases to
* generate the session info, as we just want to verify the principal
* name that we found in the ticket not the full local token
*/
static NTSTATUS test_generate_session_info_pac(struct auth4_context *auth_ctx,
TALLOC_CTX *mem_ctx,
struct smb_krb5_context *smb_krb5_context,
DATA_BLOB *pac_blob,
const char *principal_name,
const struct tsocket_address *remote_address,
uint32_t session_info_flags,
struct auth_session_info **session_info)
{
NTSTATUS nt_status;
struct auth_user_info_dc *user_info_dc;
TALLOC_CTX *tmp_ctx;
struct pac_data *pac_data;
tmp_ctx = talloc_named(mem_ctx, 0, "gensec_gssapi_session_info context");
NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
auth_ctx->private_data = pac_data = talloc_zero(auth_ctx, struct pac_data);
pac_data->principal_name = talloc_strdup(pac_data, principal_name);
if (!pac_data->principal_name) {
talloc_free(tmp_ctx);
return NT_STATUS_NO_MEMORY;
}
nt_status = kerberos_pac_blob_to_user_info_dc(tmp_ctx,
*pac_blob,
smb_krb5_context->krb5_context,
&user_info_dc, NULL, NULL);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return nt_status;
}
if (user_info_dc->info->authenticated) {
session_info_flags |= AUTH_SESSION_INFO_AUTHENTICATED;
}
session_info_flags |= AUTH_SESSION_INFO_SIMPLE_PRIVILEGES;
nt_status = auth_generate_session_info(mem_ctx,
NULL,
NULL,
user_info_dc, session_info_flags,
session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(tmp_ctx);
return nt_status;
}
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
/* Check to see if we can pass the PAC across to the NETLOGON server for validation */
/* Also happens to be a really good one-step verfication of our Kerberos stack */
static bool test_accept_ticket(struct torture_context *tctx,
struct cli_credentials *credentials,
const char *principal,
DATA_BLOB client_to_server)
{
NTSTATUS status;
struct gensec_security *gensec_server_context;
DATA_BLOB server_to_client;
struct auth4_context *auth_context;
struct auth_session_info *session_info;
struct pac_data *pac_data;
TALLOC_CTX *tmp_ctx = talloc_new(tctx);
torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
auth_context = talloc_zero(tmp_ctx, struct auth4_context);
torture_assert(tctx, auth_context != NULL, "talloc_new() failed");
auth_context->generate_session_info_pac = test_generate_session_info_pac;
status = gensec_server_start(tctx,
lpcfg_gensec_settings(tctx, tctx->lp_ctx),
auth_context, &gensec_server_context);
torture_assert_ntstatus_ok(tctx, status, "gensec_server_start (server) failed");
status = gensec_set_credentials(gensec_server_context, credentials);
torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (server) failed");
status = gensec_start_mech_by_name(gensec_server_context, "krb5");
torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_name (server) failed");
server_to_client = data_blob(NULL, 0);
/* Do a client-server update dance */
status = gensec_update(gensec_server_context, tmp_ctx, client_to_server, &server_to_client);
torture_assert_ntstatus_ok(tctx, status, "gensec_update (server) failed");
/* Extract the PAC using Samba's code */
status = gensec_session_info(gensec_server_context, gensec_server_context, &session_info);
torture_assert_ntstatus_ok(tctx, status, "gensec_session_info failed");
pac_data = talloc_get_type(auth_context->private_data, struct pac_data);
torture_assert(tctx, pac_data != NULL, "gensec_update failed to fill in pac_data in auth_context");
torture_assert(tctx, pac_data->principal_name != NULL, "principal_name not present");
torture_assert_str_equal(tctx, pac_data->principal_name, principal, "wrong principal name");
return true;
}
/*
* TEST_AS_REQ and TEST_AS_REQ_SELF - SEND
@ -1298,6 +1417,7 @@ static bool torture_krb5_as_req_canon(struct torture_context *tctx, const void *
char *krbtgt_other_string;
int principal_flags;
char *expected_principal_string;
char *expected_unparse_principal_string;
int expected_principal_flags;
char *got_principal_string;
char *assertion_message;
@ -1436,6 +1556,11 @@ static bool torture_krb5_as_req_canon(struct torture_context *tctx, const void *
&expected_principal),
0, "krb5_parse_name_flags failed");
torture_assert_int_equal(tctx,
krb5_unparse_name(k5_context,
expected_principal,
&expected_unparse_principal_string),
0, "krb5_unparse_name failed");
/*
* Prepare a AS-REQ and run the TEST_AS_REQ tests
*
@ -1752,7 +1877,7 @@ static bool torture_krb5_as_req_canon(struct torture_context *tctx, const void *
in_data.length = 0;
k5ret = krb5_mk_req_exact(k5_context,
&auth_context,
0,
AP_OPTS_USE_SUBKEY,
principal,
&in_data, ccache,
&enc_ticket);
@ -1766,7 +1891,15 @@ static bool torture_krb5_as_req_canon(struct torture_context *tctx, const void *
* servicePrincipalName) can expect this test to succeed
*/
if (torture_setting_bool(tctx, "expect_machine_account", false) && (test_data->enterprise || test_data->upn == false)) {
DATA_BLOB client_to_server;
torture_assert_int_equal(tctx, k5ret, 0, assertion_message);
client_to_server = data_blob_const(enc_ticket.data, enc_ticket.length);
torture_assert(tctx,
test_accept_ticket(tctx, cmdline_credentials,
expected_unparse_principal_string,
client_to_server),
"test_accept_ticket failed - failed to accept the ticket we just created");
krb5_data_free(&enc_ticket);
} else {
torture_assert_int_equal(tctx, k5ret, KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN,
assertion_message);