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/*
Unix SMB/CIFS implementation.
Extract kerberos keys from a remote SamSync server
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
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 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 "libnet/libnet.h"
#include "system/kerberos.h"
#include "auth/credentials/credentials.h"
#include "auth/credentials/credentials_krb5.h"
#include "param/param.h"
#include "lib/events/events.h"
static NTSTATUS samdump_keytab_handle_user(TALLOC_CTX *mem_ctx,
struct event_context *event_ctx,
struct loadparm_context *lp_ctx,
const char *keytab_name,
struct netr_DELTA_ENUM *delta)
{
struct netr_DELTA_USER *user = delta->delta_union.user;
const char *username = user->account_name.string;
struct cli_credentials *credentials;
int ret;
if (!user->nt_password_present) {
/* We can't do anything here */
return NT_STATUS_OK;
}
credentials = cli_credentials_init(mem_ctx);
if (!credentials) {
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(credentials, lp_ctx);
cli_credentials_set_username(credentials, username, CRED_SPECIFIED);
/* We really should consult ldap in the main SamSync code, and
* pass a value in here */
cli_credentials_set_kvno(credentials, 0);
cli_credentials_set_nt_hash(credentials, &user->ntpassword, CRED_SPECIFIED);
ret = cli_credentials_set_keytab_name(credentials, event_ctx, lp_ctx, keytab_name, CRED_SPECIFIED);
if (ret) {
return NT_STATUS_UNSUCCESSFUL;
}
ret = cli_credentials_update_keytab(credentials, event_ctx, lp_ctx);
if (ret) {
return NT_STATUS_UNSUCCESSFUL;
}
return NT_STATUS_OK;
}
struct libnet_samdump_keytab_data {
const char *keytab_name;
struct event_context *ev_ctx;
struct loadparm_context *lp_ctx;
};
static NTSTATUS libnet_samdump_keytab_fn(TALLOC_CTX *mem_ctx,
void *private,
enum netr_SamDatabaseID database,
struct netr_DELTA_ENUM *delta,
char **error_string)
{
NTSTATUS nt_status = NT_STATUS_OK;
struct libnet_samdump_keytab_data *data = private;
*error_string = NULL;
switch (delta->delta_type) {
case NETR_DELTA_USER:
{
/* not interested in builtin users */
if (database == SAM_DATABASE_DOMAIN) {
nt_status = samdump_keytab_handle_user(mem_ctx,
data->ev_ctx,
data->lp_ctx,
data->keytab_name,
delta);
break;
}
}
default:
/* Can't dump them all right now */
break;
}
return nt_status;
}
NTSTATUS libnet_SamDump_keytab(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_SamDump_keytab *r)
{
NTSTATUS nt_status;
struct libnet_samdump_keytab_data data;
struct libnet_SamSync r2;
data.keytab_name = r->in.keytab_name;
data.ev_ctx = ctx->event_ctx;
data.lp_ctx = ctx->lp_ctx;
r2.out.error_string = NULL;
r2.in.binding_string = r->in.binding_string;
r2.in.rid_crypt = true;
r2.in.init_fn = NULL;
r2.in.delta_fn = libnet_samdump_keytab_fn;
r2.in.fn_ctx = &data;
r2.in.machine_account = r->in.machine_account;
nt_status = libnet_SamSync_netlogon(ctx, mem_ctx, &r2);
r->out.error_string = r2.out.error_string;
talloc_steal(mem_ctx, r->out.error_string);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
return nt_status;
}
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