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/*
Unix SMB/CIFS implementation.
PAC Glue between Samba and the KDC
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "kdc/kdc.h"
#include "kdc/pac-glue.h" /* Ensure we don't get this prototype wrong, as that could be painful */
krb5_error_code samba_get_pac(krb5_context context,
struct krb5_kdc_configuration *config,
krb5_principal client,
krb5_keyblock *krbtgt_keyblock,
krb5_keyblock *server_keyblock,
krb5_data *pac)
{
krb5_error_code ret;
NTSTATUS nt_status;
struct auth_serversupplied_info *server_info;
char *username, *p;
const char *realm;
DATA_BLOB tmp_blob;
TALLOC_CTX *mem_ctx = talloc_named(config, 0, "samba_get_pac context");
if (!mem_ctx) {
return ENOMEM;
}
ret = krb5_unparse_name(context, client, &username);
if (ret != 0) {
krb5_set_error_string(context, "get pac: could not parse principal");
krb5_warnx(context, "get pac: could not parse principal");
talloc_free(mem_ctx);
return ret;
}
/* parse the principal name */
realm = krb5_principal_get_realm(context, client);
username = talloc_strdup(mem_ctx, username);
p = strchr(username, '@');
if (p) {
p[0] = '\0';
}
nt_status = sam_get_server_info(mem_ctx, username, realm,
data_blob(NULL, 0), data_blob(NULL, 0),
&server_info);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0, ("Getting user info for PAC failed: %s\n",
nt_errstr(nt_status)));
return EINVAL;
}
ret = kerberos_encode_pac(mem_ctx, server_info,
context,
krbtgt_keyblock,
server_keyblock,
&tmp_blob);
if (ret) {
DEBUG(1, ("PAC encoding failed: %s\n",
smb_get_krb5_error_message(context, ret, mem_ctx)));
talloc_free(mem_ctx);
return ret;
}
ret = krb5_data_copy(pac, tmp_blob.data, tmp_blob.length);
talloc_free(mem_ctx);
return ret;
}
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