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/*
Unix SMB/CIFS implementation.
Copyright (C) Guenther Deschner <gd@samba.org> 2008
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"
#if defined(HAVE_ADS) && defined(ENCTYPE_ARCFOUR_HMAC)
/****************************************************************
****************************************************************/
static NTSTATUS parse_object(TALLOC_CTX *mem_ctx,
struct libnet_keytab_context *ctx,
struct drsuapi_DsReplicaObjectListItemEx *cur)
{
NTSTATUS status = NT_STATUS_OK;
uchar nt_passwd[16];
struct libnet_keytab_entry entry;
DATA_BLOB *blob;
int i = 0;
struct drsuapi_DsReplicaAttribute *attr;
bool got_pwd = false;
char *upn = NULL;
char *name = NULL;
uint32_t kvno = 0;
uint32_t uacc = 0;
uint32_t sam_type = 0;
uint32_t pwd_history_len = 0;
uint8_t *pwd_history = NULL;
ZERO_STRUCT(nt_passwd);
for (i=0; i < cur->object.attribute_ctr.num_attributes; i++) {
attr = &cur->object.attribute_ctr.attributes[i];
if (attr->value_ctr.num_values != 1) {
continue;
}
if (!attr->value_ctr.values[0].blob) {
continue;
}
blob = attr->value_ctr.values[0].blob;
switch (attr->attid) {
case DRSUAPI_ATTRIBUTE_unicodePwd:
if (blob->length != 16) {
break;
}
memcpy(&nt_passwd, blob->data, 16);
got_pwd = true;
/* pick the kvno from the meta_data version,
* thanks, metze, for explaining this */
if (!cur->meta_data_ctr) {
break;
}
if (cur->meta_data_ctr->count !=
cur->object.attribute_ctr.num_attributes) {
break;
}
kvno = cur->meta_data_ctr->meta_data[i].version;
break;
case DRSUAPI_ATTRIBUTE_ntPwdHistory:
pwd_history_len = blob->length / 16;
pwd_history = blob->data;
break;
case DRSUAPI_ATTRIBUTE_msDS_KeyVersionNumber:
kvno = IVAL(blob->data, 0);
break;
case DRSUAPI_ATTRIBUTE_userPrincipalName:
pull_string_talloc(mem_ctx, NULL, 0, &upn,
blob->data, blob->length,
STR_UNICODE);
break;
case DRSUAPI_ATTRIBUTE_sAMAccountName:
pull_string_talloc(mem_ctx, NULL, 0, &name,
blob->data, blob->length,
STR_UNICODE);
break;
case DRSUAPI_ATTRIBUTE_sAMAccountType:
sam_type = IVAL(blob->data, 0);
break;
case DRSUAPI_ATTRIBUTE_userAccountControl:
uacc = IVAL(blob->data, 0);
break;
default:
break;
}
}
if (!got_pwd || !name) {
return NT_STATUS_OK;
}
DEBUG(1,("#%02d: %s:%d, ", ctx->count, name, kvno));
DEBUGADD(1,("sAMAccountType: 0x%08x, userAccountControl: 0x%08x ",
sam_type, uacc));
if (upn) {
DEBUGADD(1,("upn: %s", upn));
}
DEBUGADD(1,("\n"));
entry.kvno = kvno;
entry.name = talloc_strdup(mem_ctx, name);
entry.principal = talloc_asprintf(mem_ctx, "%s@%s",
name, ctx->dns_domain_name);
entry.password = data_blob_talloc(mem_ctx, nt_passwd, 16);
NT_STATUS_HAVE_NO_MEMORY(entry.name);
NT_STATUS_HAVE_NO_MEMORY(entry.principal);
NT_STATUS_HAVE_NO_MEMORY(entry.password.data);
ADD_TO_ARRAY(mem_ctx, struct libnet_keytab_entry, entry,
&ctx->entries, &ctx->count);
if ((kvno < 0) && (kvno < pwd_history_len)) {
return status;
}
/* add password history */
/* skip first entry */
if (got_pwd) {
kvno--;
i = 1;
} else {
i = 0;
}
for (; i<pwd_history_len; i++) {
entry.kvno = kvno--;
entry.name = talloc_strdup(mem_ctx, name);
entry.principal = talloc_asprintf(mem_ctx, "%s@%s",
name, ctx->dns_domain_name);
entry.password = data_blob_talloc(mem_ctx, &pwd_history[i*16], 16);
NT_STATUS_HAVE_NO_MEMORY(entry.name);
NT_STATUS_HAVE_NO_MEMORY(entry.principal);
NT_STATUS_HAVE_NO_MEMORY(entry.password.data);
ADD_TO_ARRAY(mem_ctx, struct libnet_keytab_entry, entry,
&ctx->entries, &ctx->count);
}
return status;
}
/****************************************************************
****************************************************************/
NTSTATUS libnet_dssync_dump_keytab(TALLOC_CTX *mem_ctx,
struct drsuapi_DsReplicaObjectListItemEx *cur,
struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
bool last_query,
struct dssync_context *ctx)
{
NTSTATUS status = NT_STATUS_OK;
krb5_error_code ret = 0;
static struct libnet_keytab_context *keytab_ctx = NULL;
if (!keytab_ctx) {
ret = libnet_keytab_init(mem_ctx,
ctx->output_filename,
&keytab_ctx);
if (ret) {
status = krb5_to_nt_status(ret);
goto out;
}
keytab_ctx->dns_domain_name = ctx->dns_domain_name;
}
for (; cur; cur = cur->next_object) {
status = parse_object(mem_ctx, keytab_ctx, cur);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
}
if (last_query) {
ret = libnet_keytab_add(keytab_ctx);
if (ret) {
status = krb5_to_nt_status(ret);
ctx->error_message = talloc_asprintf(mem_ctx,
"Failed to add entries to keytab %s: %s",
keytab_ctx->keytab_name, error_message(ret));
goto out;
}
ctx->result_message = talloc_asprintf(mem_ctx,
"Vampired %d accounts to keytab %s",
keytab_ctx->count,
keytab_ctx->keytab_name);
TALLOC_FREE(keytab_ctx);
}
return NT_STATUS_OK;
out:
TALLOC_FREE(keytab_ctx);
return status;
}
#else
NTSTATUS libnet_dssync_dump_keytab(TALLOC_CTX *mem_ctx,
struct drsuapi_DsReplicaObjectListItemEx *cur,
struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
bool last_query,
struct dssync_context *ctx)
{
return NT_STATUS_NOT_SUPPORTED;
}
#endif /* defined(HAVE_ADS) && defined(ENCTYPE_ARCFOUR_HMAC) */
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