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/*
Unix SMB/CIFS implementation.
Generic Authentication Interface
Copyright (C) Andrew Tridgell 2003
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "auth/gensec/gensec.h"
#include "auth/gensec/gensec_proto.h"
#include "auth/auth.h"
#include "auth/credentials/credentials.h"
#include "auth/system_session_proto.h"
#include "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
#include "auth/kerberos/kerberos_util.h"
NTSTATUS gensec_generate_session_info(TALLOC_CTX *mem_ctx,
struct gensec_security *gensec_security,
struct auth_user_info_dc *user_info_dc,
struct auth_session_info **session_info)
{
NTSTATUS nt_status;
uint32_t session_info_flags = 0;
if (gensec_security->want_features & GENSEC_FEATURE_UNIX_TOKEN) {
session_info_flags |= AUTH_SESSION_INFO_UNIX_TOKEN;
}
session_info_flags |= AUTH_SESSION_INFO_DEFAULT_GROUPS;
if (user_info_dc->info->authenticated) {
session_info_flags |= AUTH_SESSION_INFO_AUTHENTICATED;
}
if (gensec_security->auth_context) {
nt_status = gensec_security->auth_context->generate_session_info(mem_ctx, gensec_security->auth_context,
user_info_dc,
session_info_flags,
session_info);
} else {
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);
}
return nt_status;
}
NTSTATUS gensec_generate_session_info_pac(TALLOC_CTX *mem_ctx_out,
struct gensec_security *gensec_security,
struct smb_krb5_context *smb_krb5_context,
DATA_BLOB *pac_blob,
const char *principal_string,
const struct tsocket_address *remote_address,
struct auth_session_info **session_info)
{
NTSTATUS nt_status;
uint32_t session_info_flags = 0;
TALLOC_CTX *mem_ctx;
struct auth_user_info_dc *user_info_dc;
struct PAC_SIGNATURE_DATA *pac_srv_sig = NULL;
struct PAC_SIGNATURE_DATA *pac_kdc_sig = NULL;
if (gensec_security->want_features & GENSEC_FEATURE_UNIX_TOKEN) {
session_info_flags |= AUTH_SESSION_INFO_UNIX_TOKEN;
}
session_info_flags |= AUTH_SESSION_INFO_DEFAULT_GROUPS;
if (!pac_blob) {
if (!gensec_setting_bool(gensec_security->settings, "gensec", "require_pac", false)) {
DEBUG(1, ("Unable to find PAC in ticket from %s, failing to allow access\n",
principal_string));
return NT_STATUS_ACCESS_DENIED;
}
DEBUG(1, ("Unable to find PAC for %s, resorting to local user lookup\n",
principal_string));
}
if (gensec_security->auth_context) {
return gensec_security->auth_context->generate_session_info_pac(gensec_security->auth_context,
mem_ctx_out,
smb_krb5_context,
pac_blob,
principal_string,
remote_address,
session_info_flags,
session_info);
} else if (!pac_blob) {
DEBUG(0, ("Cannot generate a session_info without either the PAC or the auth_context\n"));
return NT_STATUS_NO_SUCH_USER;
}
mem_ctx = talloc_named(mem_ctx_out, 0, "gensec_gssapi_session_info context");
NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
pac_srv_sig = talloc(mem_ctx, struct PAC_SIGNATURE_DATA);
if (!pac_srv_sig) {
talloc_free(mem_ctx);
return NT_STATUS_NO_MEMORY;
}
pac_kdc_sig = talloc(mem_ctx, struct PAC_SIGNATURE_DATA);
if (!pac_kdc_sig) {
talloc_free(mem_ctx);
return NT_STATUS_NO_MEMORY;
}
nt_status = kerberos_pac_blob_to_user_info_dc(mem_ctx,
*pac_blob,
smb_krb5_context->krb5_context,
&user_info_dc,
pac_srv_sig,
pac_kdc_sig);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
return nt_status;
}
session_info_flags |= AUTH_SESSION_INFO_SIMPLE_PRIVILEGES;
nt_status = auth_generate_session_info(mem_ctx_out,
NULL,
NULL,
user_info_dc, session_info_flags,
session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
return nt_status;
}
if ((*session_info)->torture) {
(*session_info)->torture->pac_srv_sig
= talloc_steal((*session_info)->torture, pac_srv_sig);
(*session_info)->torture->pac_kdc_sig
= talloc_steal((*session_info)->torture, pac_kdc_sig);
}
talloc_free(mem_ctx);
return nt_status;
}
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