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samba-mirror/source4/dsdb/common/util.c
Ralph Boehme 2327471756 lib: relicense smb_strtoul(l) under LGPLv3 
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Volker Lendecke <vl@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Aug  3 22:21:04 UTC 2020 on sn-devel-184
2020-08-03 22:21:02 +00:00

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/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Andrew Tridgell 2004
Copyright (C) Volker Lendecke 2004
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006
Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
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 "events/events.h"
#include "ldb.h"
#include "ldb_module.h"
#include "ldb_errors.h"
#include "../lib/util/util_ldb.h"
#include "../lib/crypto/crypto.h"
#include "dsdb/samdb/samdb.h"
#include "libcli/security/security.h"
#include "librpc/gen_ndr/ndr_security.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "../libds/common/flags.h"
#include "dsdb/common/proto.h"
#include "libcli/ldap/ldap_ndr.h"
#include "param/param.h"
#include "libcli/auth/libcli_auth.h"
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "system/locale.h"
#include "system/filesys.h"
#include "lib/util/tsort.h"
#include "dsdb/common/util.h"
#include "lib/socket/socket.h"
#include "librpc/gen_ndr/irpc.h"
#include "libds/common/flag_mapping.h"
#include "lib/util/access.h"
#include "lib/util/util_str_hex.h"
#include "lib/util/sys_rw_data.h"
#include "libcli/util/ntstatus.h"
#include "lib/util/smb_strtox.h"
/*
* This included to allow us to handle DSDB_FLAG_REPLICATED_UPDATE in
* dsdb_request_add_controls()
*/
#include "dsdb/samdb/ldb_modules/util.h"
/* default is 30 minutes: -1e7 * 30 * 60 */
#define DEFAULT_OBSERVATION_WINDOW -18000000000
/*
search the sam for the specified attributes in a specific domain, filter on
objectSid being in domain_sid.
*/
int samdb_search_domain(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *basedn,
struct ldb_message ***res,
const char * const *attrs,
const struct dom_sid *domain_sid,
const char *format, ...) _PRINTF_ATTRIBUTE(7,8)
{
va_list ap;
int i, count;
va_start(ap, format);
count = gendb_search_v(sam_ldb, mem_ctx, basedn,
res, attrs, format, ap);
va_end(ap);
i=0;
while (i<count) {
struct dom_sid *entry_sid;
entry_sid = samdb_result_dom_sid(mem_ctx, (*res)[i], "objectSid");
if ((entry_sid == NULL) ||
(!dom_sid_in_domain(domain_sid, entry_sid))) {
/* Delete that entry from the result set */
(*res)[i] = (*res)[count-1];
count -= 1;
talloc_free(entry_sid);
continue;
}
talloc_free(entry_sid);
i += 1;
}
return count;
}
/*
search the sam for a single string attribute in exactly 1 record
*/
const char *samdb_search_string_v(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *basedn,
const char *attr_name,
const char *format, va_list ap) _PRINTF_ATTRIBUTE(5,0)
{
int count;
const char *attrs[2] = { NULL, NULL };
struct ldb_message **res = NULL;
attrs[0] = attr_name;
count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
if (count > 1) {
DEBUG(1,("samdb: search for %s %s not single valued (count=%d)\n",
attr_name, format, count));
}
if (count != 1) {
talloc_free(res);
return NULL;
}
return ldb_msg_find_attr_as_string(res[0], attr_name, NULL);
}
/*
search the sam for a single string attribute in exactly 1 record
*/
const char *samdb_search_string(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *basedn,
const char *attr_name,
const char *format, ...) _PRINTF_ATTRIBUTE(5,6)
{
va_list ap;
const char *str;
va_start(ap, format);
str = samdb_search_string_v(sam_ldb, mem_ctx, basedn, attr_name, format, ap);
va_end(ap);
return str;
}
struct ldb_dn *samdb_search_dn(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *basedn,
const char *format, ...) _PRINTF_ATTRIBUTE(4,5)
{
va_list ap;
struct ldb_dn *ret;
struct ldb_message **res = NULL;
int count;
va_start(ap, format);
count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, NULL, format, ap);
va_end(ap);
if (count != 1) return NULL;
ret = talloc_steal(mem_ctx, res[0]->dn);
talloc_free(res);
return ret;
}
/*
search the sam for a dom_sid attribute in exactly 1 record
*/
struct dom_sid *samdb_search_dom_sid(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *basedn,
const char *attr_name,
const char *format, ...) _PRINTF_ATTRIBUTE(5,6)
{
va_list ap;
int count;
struct ldb_message **res;
const char *attrs[2] = { NULL, NULL };
struct dom_sid *sid;
attrs[0] = attr_name;
va_start(ap, format);
count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
va_end(ap);
if (count > 1) {
DEBUG(1,("samdb: search for %s %s not single valued (count=%d)\n",
attr_name, format, count));
}
if (count != 1) {
talloc_free(res);
return NULL;
}
sid = samdb_result_dom_sid(mem_ctx, res[0], attr_name);
talloc_free(res);
return sid;
}
/*
search the sam for a single integer attribute in exactly 1 record
*/
unsigned int samdb_search_uint(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
unsigned int default_value,
struct ldb_dn *basedn,
const char *attr_name,
const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
{
va_list ap;
int count;
struct ldb_message **res;
const char *attrs[2] = { NULL, NULL };
attrs[0] = attr_name;
va_start(ap, format);
count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
va_end(ap);
if (count != 1) {
return default_value;
}
return ldb_msg_find_attr_as_uint(res[0], attr_name, default_value);
}
/*
search the sam for a single signed 64 bit integer attribute in exactly 1 record
*/
int64_t samdb_search_int64(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
int64_t default_value,
struct ldb_dn *basedn,
const char *attr_name,
const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
{
va_list ap;
int count;
struct ldb_message **res;
const char *attrs[2] = { NULL, NULL };
attrs[0] = attr_name;
va_start(ap, format);
count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
va_end(ap);
if (count != 1) {
return default_value;
}
return ldb_msg_find_attr_as_int64(res[0], attr_name, default_value);
}
/*
search the sam for multipe records each giving a single string attribute
return the number of matches, or -1 on error
*/
int samdb_search_string_multiple(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *basedn,
const char ***strs,
const char *attr_name,
const char *format, ...) _PRINTF_ATTRIBUTE(6,7)
{
va_list ap;
int count, i;
const char *attrs[2] = { NULL, NULL };
struct ldb_message **res = NULL;
attrs[0] = attr_name;
va_start(ap, format);
count = gendb_search_v(sam_ldb, mem_ctx, basedn, &res, attrs, format, ap);
va_end(ap);
if (count <= 0) {
return count;
}
/* make sure its single valued */
for (i=0;i<count;i++) {
if (res[i]->num_elements != 1) {
DEBUG(1,("samdb: search for %s %s not single valued\n",
attr_name, format));
talloc_free(res);
return -1;
}
}
*strs = talloc_array(mem_ctx, const char *, count+1);
if (! *strs) {
talloc_free(res);
return -1;
}
for (i=0;i<count;i++) {
(*strs)[i] = ldb_msg_find_attr_as_string(res[i], attr_name, NULL);
}
(*strs)[count] = NULL;
return count;
}
struct ldb_dn *samdb_result_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
const char *attr, struct ldb_dn *default_value)
{
struct ldb_dn *ret_dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx, msg, attr);
if (!ret_dn) {
return default_value;
}
return ret_dn;
}
/*
pull a rid from a objectSid in a result set.
*/
uint32_t samdb_result_rid_from_sid(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
const char *attr, uint32_t default_value)
{
struct dom_sid *sid;
uint32_t rid;
sid = samdb_result_dom_sid(mem_ctx, msg, attr);
if (sid == NULL) {
return default_value;
}
rid = sid->sub_auths[sid->num_auths-1];
talloc_free(sid);
return rid;
}
/*
pull a dom_sid structure from a objectSid in a result set.
*/
struct dom_sid *samdb_result_dom_sid(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
const char *attr)
{
ssize_t ret;
const struct ldb_val *v;
struct dom_sid *sid;
v = ldb_msg_find_ldb_val(msg, attr);
if (v == NULL) {
return NULL;
}
sid = talloc(mem_ctx, struct dom_sid);
if (sid == NULL) {
return NULL;
}
ret = sid_parse(v->data, v->length, sid);
if (ret == -1) {
talloc_free(sid);
return NULL;
}
return sid;
}
/*
pull a guid structure from a objectGUID in a result set.
*/
struct GUID samdb_result_guid(const struct ldb_message *msg, const char *attr)
{
const struct ldb_val *v;
struct GUID guid;
NTSTATUS status;
v = ldb_msg_find_ldb_val(msg, attr);
if (!v) return GUID_zero();
status = GUID_from_ndr_blob(v, &guid);
if (!NT_STATUS_IS_OK(status)) {
return GUID_zero();
}
return guid;
}
/*
pull a sid prefix from a objectSid in a result set.
this is used to find the domain sid for a user
*/
struct dom_sid *samdb_result_sid_prefix(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
const char *attr)
{
struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, msg, attr);
if (!sid || sid->num_auths < 1) return NULL;
sid->num_auths--;
return sid;
}
/*
pull a NTTIME in a result set.
*/
NTTIME samdb_result_nttime(const struct ldb_message *msg, const char *attr,
NTTIME default_value)
{
return ldb_msg_find_attr_as_uint64(msg, attr, default_value);
}
/*
* Windows stores 0 for lastLogoff.
* But when a MS DC return the lastLogoff (as Logoff Time)
* it returns 0x7FFFFFFFFFFFFFFF, not returning this value in this case
* cause windows 2008 and newer version to fail for SMB requests
*/
NTTIME samdb_result_last_logoff(const struct ldb_message *msg)
{
NTTIME ret = ldb_msg_find_attr_as_uint64(msg, "lastLogoff",0);
if (ret == 0)
ret = 0x7FFFFFFFFFFFFFFFULL;
return ret;
}
/*
* Windows uses both 0 and 9223372036854775807 (0x7FFFFFFFFFFFFFFFULL) to
* indicate an account doesn't expire.
*
* When Windows initially creates an account, it sets
* accountExpires = 9223372036854775807 (0x7FFFFFFFFFFFFFFF). However,
* when changing from an account having a specific expiration date to
* that account never expiring, it sets accountExpires = 0.
*
* Consolidate that logic here to allow clearer logic for account expiry in
* the rest of the code.
*/
NTTIME samdb_result_account_expires(const struct ldb_message *msg)
{
NTTIME ret = ldb_msg_find_attr_as_uint64(msg, "accountExpires",
0);
if (ret == 0)
ret = 0x7FFFFFFFFFFFFFFFULL;
return ret;
}
/*
construct the allow_password_change field from the PwdLastSet attribute and the
domain password settings
*/
NTTIME samdb_result_allow_password_change(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *domain_dn,
struct ldb_message *msg,
const char *attr)
{
uint64_t attr_time = ldb_msg_find_attr_as_uint64(msg, attr, 0);
int64_t minPwdAge;
if (attr_time == 0) {
return 0;
}
minPwdAge = samdb_search_int64(sam_ldb, mem_ctx, 0, domain_dn, "minPwdAge", NULL);
/* yes, this is a -= not a += as minPwdAge is stored as the negative
of the number of 100-nano-seconds */
attr_time -= minPwdAge;
return attr_time;
}
/*
pull a samr_Password structutre from a result set.
*/
struct samr_Password *samdb_result_hash(TALLOC_CTX *mem_ctx, const struct ldb_message *msg, const char *attr)
{
struct samr_Password *hash = NULL;
const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
if (val && (val->length >= sizeof(hash->hash))) {
hash = talloc(mem_ctx, struct samr_Password);
memcpy(hash->hash, val->data, MIN(val->length, sizeof(hash->hash)));
}
return hash;
}
/*
pull an array of samr_Password structures from a result set.
*/
unsigned int samdb_result_hashes(TALLOC_CTX *mem_ctx, const struct ldb_message *msg,
const char *attr, struct samr_Password **hashes)
{
unsigned int count, i;
const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
*hashes = NULL;
if (!val) {
return 0;
}
count = val->length / 16;
if (count == 0) {
return 0;
}
*hashes = talloc_array(mem_ctx, struct samr_Password, count);
if (! *hashes) {
return 0;
}
for (i=0;i<count;i++) {
memcpy((*hashes)[i].hash, (i*16)+(char *)val->data, 16);
}
return count;
}
NTSTATUS samdb_result_passwords_from_history(TALLOC_CTX *mem_ctx,
struct loadparm_context *lp_ctx,
struct ldb_message *msg,
unsigned int idx,
struct samr_Password **lm_pwd,
struct samr_Password **nt_pwd)
{
struct samr_Password *lmPwdHash, *ntPwdHash;
if (nt_pwd) {
unsigned int num_nt;
num_nt = samdb_result_hashes(mem_ctx, msg, "ntPwdHistory", &ntPwdHash);
if (num_nt <= idx) {
*nt_pwd = NULL;
} else {
*nt_pwd = &ntPwdHash[idx];
}
}
if (lm_pwd) {
/* Ensure that if we have turned off LM
* authentication, that we never use the LM hash, even
* if we store it */
if (lpcfg_lanman_auth(lp_ctx)) {
unsigned int num_lm;
num_lm = samdb_result_hashes(mem_ctx, msg, "lmPwdHistory", &lmPwdHash);
if (num_lm <= idx) {
*lm_pwd = NULL;
} else {
*lm_pwd = &lmPwdHash[idx];
}
} else {
*lm_pwd = NULL;
}
}
return NT_STATUS_OK;
}
NTSTATUS samdb_result_passwords_no_lockout(TALLOC_CTX *mem_ctx,
struct loadparm_context *lp_ctx,
const struct ldb_message *msg,
struct samr_Password **lm_pwd,
struct samr_Password **nt_pwd)
{
struct samr_Password *lmPwdHash, *ntPwdHash;
if (nt_pwd) {
unsigned int num_nt;
num_nt = samdb_result_hashes(mem_ctx, msg, "unicodePwd", &ntPwdHash);
if (num_nt == 0) {
*nt_pwd = NULL;
} else if (num_nt > 1) {
return NT_STATUS_INTERNAL_DB_CORRUPTION;
} else {
*nt_pwd = &ntPwdHash[0];
}
}
if (lm_pwd) {
/* Ensure that if we have turned off LM
* authentication, that we never use the LM hash, even
* if we store it */
if (lpcfg_lanman_auth(lp_ctx)) {
unsigned int num_lm;
num_lm = samdb_result_hashes(mem_ctx, msg, "dBCSPwd", &lmPwdHash);
if (num_lm == 0) {
*lm_pwd = NULL;
} else if (num_lm > 1) {
return NT_STATUS_INTERNAL_DB_CORRUPTION;
} else {
*lm_pwd = &lmPwdHash[0];
}
} else {
*lm_pwd = NULL;
}
}
return NT_STATUS_OK;
}
NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx,
struct loadparm_context *lp_ctx,
const struct ldb_message *msg,
struct samr_Password **lm_pwd,
struct samr_Password **nt_pwd)
{
uint16_t acct_flags;
acct_flags = samdb_result_acct_flags(msg,
"msDS-User-Account-Control-Computed");
/* Quit if the account was locked out. */
if (acct_flags & ACB_AUTOLOCK) {
DEBUG(3,("samdb_result_passwords: Account for user %s was locked out.\n",
ldb_dn_get_linearized(msg->dn)));
return NT_STATUS_ACCOUNT_LOCKED_OUT;
}
return samdb_result_passwords_no_lockout(mem_ctx, lp_ctx, msg,
lm_pwd, nt_pwd);
}
/*
pull a samr_LogonHours structutre from a result set.
*/
struct samr_LogonHours samdb_result_logon_hours(TALLOC_CTX *mem_ctx, struct ldb_message *msg, const char *attr)
{
struct samr_LogonHours hours;
size_t units_per_week = 168;
const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
ZERO_STRUCT(hours);
if (val) {
units_per_week = val->length * 8;
}
hours.bits = talloc_array(mem_ctx, uint8_t, units_per_week/8);
if (!hours.bits) {
return hours;
}
hours.units_per_week = units_per_week;
memset(hours.bits, 0xFF, units_per_week/8);
if (val) {
memcpy(hours.bits, val->data, val->length);
}
return hours;
}
/*
pull a set of account_flags from a result set.
Naturally, this requires that userAccountControl and
(if not null) the attributes 'attr' be already
included in msg
*/
uint32_t samdb_result_acct_flags(const struct ldb_message *msg, const char *attr)
{
uint32_t userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
uint32_t attr_flags = 0;
uint32_t acct_flags = ds_uf2acb(userAccountControl);
if (attr) {
attr_flags = ldb_msg_find_attr_as_uint(msg, attr, UF_ACCOUNTDISABLE);
if (attr_flags == UF_ACCOUNTDISABLE) {
DEBUG(0, ("Attribute %s not found, disabling account %s!\n", attr,
ldb_dn_get_linearized(msg->dn)));
}
acct_flags |= ds_uf2acb(attr_flags);
}
return acct_flags;
}
NTSTATUS samdb_result_parameters(TALLOC_CTX *mem_ctx,
struct ldb_message *msg,
const char *attr,
struct lsa_BinaryString *s)
{
int i;
const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
ZERO_STRUCTP(s);
if (!val) {
return NT_STATUS_OK;
}
if ((val->length % 2) != 0) {
/*
* If the on-disk data is not even in length, we know
* it is corrupt, and can not be safely pushed. We
* would either truncate, send either a un-initilaised
* byte or send a forced zero byte
*/
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
s->array = talloc_array(mem_ctx, uint16_t, val->length/2);
if (!s->array) {
return NT_STATUS_NO_MEMORY;
}
s->length = s->size = val->length;
/* The on-disk format is the 'network' format, being UTF16LE (sort of) */
for (i = 0; i < s->length / 2; i++) {
s->array[i] = SVAL(val->data, i * 2);
}
return NT_STATUS_OK;
}
/* Find an attribute, with a particular value */
/* The current callers of this function expect a very specific
* behaviour: In particular, objectClass subclass equivalence is not
* wanted. This means that we should not lookup the schema for the
* comparison function */
struct ldb_message_element *samdb_find_attribute(struct ldb_context *ldb,
const struct ldb_message *msg,
const char *name, const char *value)
{
unsigned int i;
struct ldb_message_element *el = ldb_msg_find_element(msg, name);
if (!el) {
return NULL;
}
for (i=0;i<el->num_values;i++) {
if (ldb_attr_cmp(value, (char *)el->values[i].data) == 0) {
return el;
}
}
return NULL;
}
static int samdb_find_or_add_attribute_ex(struct ldb_context *ldb,
struct ldb_message *msg,
const char *name,
const char *set_value,
unsigned attr_flags,
bool *added)
{
int ret;
struct ldb_message_element *el;
SMB_ASSERT(attr_flags != 0);
el = ldb_msg_find_element(msg, name);
if (el) {
if (added != NULL) {
*added = false;
}
return LDB_SUCCESS;
}
ret = ldb_msg_add_empty(msg, name,
attr_flags,
&el);
if (ret != LDB_SUCCESS) {
return ret;
}
if (set_value != NULL) {
ret = ldb_msg_add_string(msg, name, set_value);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (added != NULL) {
*added = true;
}
return LDB_SUCCESS;
}
int samdb_find_or_add_attribute(struct ldb_context *ldb, struct ldb_message *msg, const char *name, const char *set_value)
{
return samdb_find_or_add_attribute_ex(ldb, msg, name, set_value, LDB_FLAG_MOD_ADD, NULL);
}
/*
add a dom_sid element to a message
*/
int samdb_msg_add_dom_sid(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, const struct dom_sid *sid)
{
struct ldb_val v;
enum ndr_err_code ndr_err;
ndr_err = ndr_push_struct_blob(&v, mem_ctx,
sid,
(ndr_push_flags_fn_t)ndr_push_dom_sid);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return ldb_operr(sam_ldb);
}
return ldb_msg_add_value(msg, attr_name, &v, NULL);
}
/*
add a delete element operation to a message
*/
int samdb_msg_add_delete(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name)
{
/* we use an empty replace rather than a delete, as it allows for
dsdb_replace() to be used everywhere */
return ldb_msg_add_empty(msg, attr_name, LDB_FLAG_MOD_REPLACE, NULL);
}
/*
add an add attribute value to a message or enhance an existing attribute
which has the same name and the add flag set.
*/
int samdb_msg_add_addval(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx,
struct ldb_message *msg, const char *attr_name,
const char *value)
{
struct ldb_message_element *el;
struct ldb_val val, *vals;
char *v;
unsigned int i;
bool found = false;
int ret;
v = talloc_strdup(mem_ctx, value);
if (v == NULL) {
return ldb_oom(sam_ldb);
}
val.data = (uint8_t *) v;
val.length = strlen(v);
if (val.length == 0) {
/* allow empty strings as non-existent attributes */
return LDB_SUCCESS;
}
for (i = 0; i < msg->num_elements; i++) {
el = &msg->elements[i];
if ((ldb_attr_cmp(el->name, attr_name) == 0) &&
(LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_ADD)) {
found = true;
break;
}
}
if (!found) {
ret = ldb_msg_add_empty(msg, attr_name, LDB_FLAG_MOD_ADD,
&el);
if (ret != LDB_SUCCESS) {
return ret;
}
}
vals = talloc_realloc(msg->elements, el->values, struct ldb_val,
el->num_values + 1);
if (vals == NULL) {
return ldb_oom(sam_ldb);
}
el->values = vals;
el->values[el->num_values] = val;
++(el->num_values);
return LDB_SUCCESS;
}
/*
add a delete attribute value to a message or enhance an existing attribute
which has the same name and the delete flag set.
*/
int samdb_msg_add_delval(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx,
struct ldb_message *msg, const char *attr_name,
const char *value)
{
struct ldb_message_element *el;
struct ldb_val val, *vals;
char *v;
unsigned int i;
bool found = false;
int ret;
v = talloc_strdup(mem_ctx, value);
if (v == NULL) {
return ldb_oom(sam_ldb);
}
val.data = (uint8_t *) v;
val.length = strlen(v);
if (val.length == 0) {
/* allow empty strings as non-existent attributes */
return LDB_SUCCESS;
}
for (i = 0; i < msg->num_elements; i++) {
el = &msg->elements[i];
if ((ldb_attr_cmp(el->name, attr_name) == 0) &&
(LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
found = true;
break;
}
}
if (!found) {
ret = ldb_msg_add_empty(msg, attr_name, LDB_FLAG_MOD_DELETE,
&el);
if (ret != LDB_SUCCESS) {
return ret;
}
}
vals = talloc_realloc(msg->elements, el->values, struct ldb_val,
el->num_values + 1);
if (vals == NULL) {
return ldb_oom(sam_ldb);
}
el->values = vals;
el->values[el->num_values] = val;
++(el->num_values);
return LDB_SUCCESS;
}
/*
add a int element to a message
*/
int samdb_msg_add_int(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, int v)
{
const char *s = talloc_asprintf(mem_ctx, "%d", v);
if (s == NULL) {
return ldb_oom(sam_ldb);
}
return ldb_msg_add_string(msg, attr_name, s);
}
/*
* Add an unsigned int element to a message
*
* The issue here is that we have not yet first cast to int32_t explicitly,
* before we cast to an signed int to printf() into the %d or cast to a
* int64_t before we then cast to a long long to printf into a %lld.
*
* There are *no* unsigned integers in Active Directory LDAP, even the RID
* allocations and ms-DS-Secondary-KrbTgt-Number are *signed* quantities.
* (See the schema, and the syntax definitions in schema_syntax.c).
*
*/
int samdb_msg_add_uint(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, unsigned int v)
{
return samdb_msg_add_int(sam_ldb, mem_ctx, msg, attr_name, (int)v);
}
/*
add a (signed) int64_t element to a message
*/
int samdb_msg_add_int64(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, int64_t v)
{
const char *s = talloc_asprintf(mem_ctx, "%lld", (long long)v);
if (s == NULL) {
return ldb_oom(sam_ldb);
}
return ldb_msg_add_string(msg, attr_name, s);
}
/*
* Add an unsigned int64_t (uint64_t) element to a message
*
* The issue here is that we have not yet first cast to int32_t explicitly,
* before we cast to an signed int to printf() into the %d or cast to a
* int64_t before we then cast to a long long to printf into a %lld.
*
* There are *no* unsigned integers in Active Directory LDAP, even the RID
* allocations and ms-DS-Secondary-KrbTgt-Number are *signed* quantities.
* (See the schema, and the syntax definitions in schema_syntax.c).
*
*/
int samdb_msg_add_uint64(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, uint64_t v)
{
return samdb_msg_add_int64(sam_ldb, mem_ctx, msg, attr_name, (int64_t)v);
}
/*
add a samr_Password element to a message
*/
int samdb_msg_add_hash(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, const struct samr_Password *hash)
{
struct ldb_val val;
val.data = talloc_memdup(mem_ctx, hash->hash, 16);
if (!val.data) {
return ldb_oom(sam_ldb);
}
val.length = 16;
return ldb_msg_add_value(msg, attr_name, &val, NULL);
}
/*
add a samr_Password array to a message
*/
int samdb_msg_add_hashes(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, struct samr_Password *hashes,
unsigned int count)
{
struct ldb_val val;
unsigned int i;
val.data = talloc_array_size(mem_ctx, 16, count);
val.length = count*16;
if (!val.data) {
return ldb_oom(ldb);
}
for (i=0;i<count;i++) {
memcpy(i*16 + (char *)val.data, hashes[i].hash, 16);
}
return ldb_msg_add_value(msg, attr_name, &val, NULL);
}
/*
add a acct_flags element to a message
*/
int samdb_msg_add_acct_flags(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, uint32_t v)
{
return samdb_msg_add_uint(sam_ldb, mem_ctx, msg, attr_name, ds_acb2uf(v));
}
/*
add a logon_hours element to a message
*/
int samdb_msg_add_logon_hours(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, struct samr_LogonHours *hours)
{
struct ldb_val val;
val.length = hours->units_per_week / 8;
val.data = hours->bits;
return ldb_msg_add_value(msg, attr_name, &val, NULL);
}
/*
add a parameters element to a message
*/
int samdb_msg_add_parameters(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
const char *attr_name, struct lsa_BinaryString *parameters)
{
int i;
struct ldb_val val;
if ((parameters->length % 2) != 0) {
return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
}
val.data = talloc_array(mem_ctx, uint8_t, parameters->length);
if (val.data == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
val.length = parameters->length;
for (i = 0; i < parameters->length / 2; i++) {
/*
* The on-disk format needs to be in the 'network'
* format, parmeters->array is a uint16_t array of
* length parameters->length / 2
*/
SSVAL(val.data, i * 2, parameters->array[i]);
}
return ldb_msg_add_steal_value(msg, attr_name, &val);
}
/*
* Sets an unsigned int element in a message
*
* The issue here is that we have not yet first cast to int32_t explicitly,
* before we cast to an signed int to printf() into the %d or cast to a
* int64_t before we then cast to a long long to printf into a %lld.
*
* There are *no* unsigned integers in Active Directory LDAP, even the RID
* allocations and ms-DS-Secondary-KrbTgt-Number are *signed* quantities.
* (See the schema, and the syntax definitions in schema_syntax.c).
*
*/
int samdb_msg_set_uint(struct ldb_context *sam_ldb, TALLOC_CTX *mem_ctx,
struct ldb_message *msg, const char *attr_name,
unsigned int v)
{
struct ldb_message_element *el;
el = ldb_msg_find_element(msg, attr_name);
if (el) {
el->num_values = 0;
}
return samdb_msg_add_uint(sam_ldb, mem_ctx, msg, attr_name, v);
}
/*
* Handle ldb_request in transaction
*/
int dsdb_autotransaction_request(struct ldb_context *sam_ldb,
struct ldb_request *req)
{
int ret;
ret = ldb_transaction_start(sam_ldb);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = ldb_request(sam_ldb, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
if (ret == LDB_SUCCESS) {
return ldb_transaction_commit(sam_ldb);
}
ldb_transaction_cancel(sam_ldb);
return ret;
}
/*
return a default security descriptor
*/
struct security_descriptor *samdb_default_security_descriptor(TALLOC_CTX *mem_ctx)
{
struct security_descriptor *sd;
sd = security_descriptor_initialise(mem_ctx);
return sd;
}
struct ldb_dn *samdb_aggregate_schema_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
{
struct ldb_dn *schema_dn = ldb_get_schema_basedn(sam_ctx);
struct ldb_dn *aggregate_dn;
if (!schema_dn) {
return NULL;
}
aggregate_dn = ldb_dn_copy(mem_ctx, schema_dn);
if (!aggregate_dn) {
return NULL;
}
if (!ldb_dn_add_child_fmt(aggregate_dn, "CN=Aggregate")) {
return NULL;
}
return aggregate_dn;
}
struct ldb_dn *samdb_partitions_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
{
struct ldb_dn *new_dn;
new_dn = ldb_dn_copy(mem_ctx, ldb_get_config_basedn(sam_ctx));
if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Partitions")) {
talloc_free(new_dn);
return NULL;
}
return new_dn;
}
struct ldb_dn *samdb_infrastructure_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
{
struct ldb_dn *new_dn;
new_dn = ldb_dn_copy(mem_ctx, ldb_get_default_basedn(sam_ctx));
if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Infrastructure")) {
talloc_free(new_dn);
return NULL;
}
return new_dn;
}
struct ldb_dn *samdb_sites_dn(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx)
{
struct ldb_dn *new_dn;
new_dn = ldb_dn_copy(mem_ctx, ldb_get_config_basedn(sam_ctx));
if ( ! ldb_dn_add_child_fmt(new_dn, "CN=Sites")) {
talloc_free(new_dn);
return NULL;
}
return new_dn;
}
/*
work out the domain sid for the current open ldb
*/
const struct dom_sid *samdb_domain_sid(struct ldb_context *ldb)
{
TALLOC_CTX *tmp_ctx;
const struct dom_sid *domain_sid;
const char *attrs[] = {
"objectSid",
NULL
};
struct ldb_result *res;
int ret;
/* see if we have a cached copy */
domain_sid = (struct dom_sid *)ldb_get_opaque(ldb, "cache.domain_sid");
if (domain_sid) {
return domain_sid;
}
tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
goto failed;
}
ret = ldb_search(ldb, tmp_ctx, &res, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, attrs, "objectSid=*");
if (ret != LDB_SUCCESS) {
goto failed;
}
if (res->count != 1) {
goto failed;
}
domain_sid = samdb_result_dom_sid(tmp_ctx, res->msgs[0], "objectSid");
if (domain_sid == NULL) {
goto failed;
}
/* cache the domain_sid in the ldb */
if (ldb_set_opaque(ldb, "cache.domain_sid", discard_const_p(struct dom_sid, domain_sid)) != LDB_SUCCESS) {
goto failed;
}
talloc_steal(ldb, domain_sid);
talloc_free(tmp_ctx);
return domain_sid;
failed:
talloc_free(tmp_ctx);
return NULL;
}
/*
get domain sid from cache
*/
const struct dom_sid *samdb_domain_sid_cache_only(struct ldb_context *ldb)
{
return (struct dom_sid *)ldb_get_opaque(ldb, "cache.domain_sid");
}
bool samdb_set_domain_sid(struct ldb_context *ldb, const struct dom_sid *dom_sid_in)
{
TALLOC_CTX *tmp_ctx;
struct dom_sid *dom_sid_new;
struct dom_sid *dom_sid_old;
/* see if we have a cached copy */
dom_sid_old = talloc_get_type(ldb_get_opaque(ldb,
"cache.domain_sid"), struct dom_sid);
tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
goto failed;
}
dom_sid_new = dom_sid_dup(tmp_ctx, dom_sid_in);
if (!dom_sid_new) {
goto failed;
}
/* cache the domain_sid in the ldb */
if (ldb_set_opaque(ldb, "cache.domain_sid", dom_sid_new) != LDB_SUCCESS) {
goto failed;
}
talloc_steal(ldb, dom_sid_new);
talloc_free(tmp_ctx);
talloc_free(dom_sid_old);
return true;
failed:
DEBUG(1,("Failed to set our own cached domain SID in the ldb!\n"));
talloc_free(tmp_ctx);
return false;
}
/*
work out the domain guid for the current open ldb
*/
const struct GUID *samdb_domain_guid(struct ldb_context *ldb)
{
TALLOC_CTX *tmp_ctx = NULL;
struct GUID *domain_guid = NULL;
const char *attrs[] = {
"objectGUID",
NULL
};
struct ldb_result *res = NULL;
int ret;
/* see if we have a cached copy */
domain_guid = (struct GUID *)ldb_get_opaque(ldb, "cache.domain_guid");
if (domain_guid) {
return domain_guid;
}
tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
goto failed;
}
ret = ldb_search(ldb, tmp_ctx, &res, ldb_get_default_basedn(ldb), LDB_SCOPE_BASE, attrs, "objectGUID=*");
if (ret != LDB_SUCCESS) {
goto failed;
}
if (res->count != 1) {
goto failed;
}
domain_guid = talloc(tmp_ctx, struct GUID);
if (domain_guid == NULL) {
goto failed;
}
*domain_guid = samdb_result_guid(res->msgs[0], "objectGUID");
/* cache the domain_sid in the ldb */
if (ldb_set_opaque(ldb, "cache.domain_guid", domain_guid) != LDB_SUCCESS) {
goto failed;
}
talloc_steal(ldb, domain_guid);
talloc_free(tmp_ctx);
return domain_guid;
failed:
talloc_free(tmp_ctx);
return NULL;
}
bool samdb_set_ntds_settings_dn(struct ldb_context *ldb, struct ldb_dn *ntds_settings_dn_in)
{
TALLOC_CTX *tmp_ctx;
struct ldb_dn *ntds_settings_dn_new;
struct ldb_dn *ntds_settings_dn_old;
/* see if we have a forced copy from provision */
ntds_settings_dn_old = talloc_get_type(ldb_get_opaque(ldb,
"forced.ntds_settings_dn"), struct ldb_dn);
tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
goto failed;
}
ntds_settings_dn_new = ldb_dn_copy(tmp_ctx, ntds_settings_dn_in);
if (!ntds_settings_dn_new) {
goto failed;
}
/* set the DN in the ldb to avoid lookups during provision */
if (ldb_set_opaque(ldb, "forced.ntds_settings_dn", ntds_settings_dn_new) != LDB_SUCCESS) {
goto failed;
}
talloc_steal(ldb, ntds_settings_dn_new);
talloc_free(tmp_ctx);
talloc_free(ntds_settings_dn_old);
return true;
failed:
DEBUG(1,("Failed to set our NTDS Settings DN in the ldb!\n"));
talloc_free(tmp_ctx);
return false;
}
/*
work out the ntds settings dn for the current open ldb
*/
struct ldb_dn *samdb_ntds_settings_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
{
TALLOC_CTX *tmp_ctx;
const char *root_attrs[] = { "dsServiceName", NULL };
int ret;
struct ldb_result *root_res;
struct ldb_dn *settings_dn;
/* see if we have a cached copy */
settings_dn = (struct ldb_dn *)ldb_get_opaque(ldb, "forced.ntds_settings_dn");
if (settings_dn) {
return ldb_dn_copy(mem_ctx, settings_dn);
}
tmp_ctx = talloc_new(mem_ctx);
if (tmp_ctx == NULL) {
goto failed;
}
ret = ldb_search(ldb, tmp_ctx, &root_res, ldb_dn_new(tmp_ctx, ldb, ""), LDB_SCOPE_BASE, root_attrs, NULL);
if (ret != LDB_SUCCESS) {
DEBUG(1,("Searching for dsServiceName in rootDSE failed: %s\n",
ldb_errstring(ldb)));
goto failed;
}
if (root_res->count != 1) {
goto failed;
}
settings_dn = ldb_msg_find_attr_as_dn(ldb, tmp_ctx, root_res->msgs[0], "dsServiceName");
/* note that we do not cache the DN here, as that would mean
* we could not handle server renames at runtime. Only
* provision sets up forced.ntds_settings_dn */
talloc_steal(mem_ctx, settings_dn);
talloc_free(tmp_ctx);
return settings_dn;
failed:
DEBUG(1,("Failed to find our own NTDS Settings DN in the ldb!\n"));
talloc_free(tmp_ctx);
return NULL;
}
/*
work out the ntds settings invocationID/objectGUID for the current open ldb
*/
static const struct GUID *samdb_ntds_GUID(struct ldb_context *ldb,
const char *attribute,
const char *cache_name)
{
TALLOC_CTX *tmp_ctx;
const char *attrs[] = { attribute, NULL };
int ret;
struct ldb_result *res;
struct GUID *ntds_guid;
struct ldb_dn *ntds_settings_dn = NULL;
const char *errstr = NULL;
/* see if we have a cached copy */
ntds_guid = (struct GUID *)ldb_get_opaque(ldb, cache_name);
if (ntds_guid != NULL) {
return ntds_guid;
}
tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
goto failed;
}
ntds_settings_dn = samdb_ntds_settings_dn(ldb, tmp_ctx);
if (ntds_settings_dn == NULL) {
errstr = "samdb_ntds_settings_dn() returned NULL";
goto failed;
}
ret = ldb_search(ldb, tmp_ctx, &res, ntds_settings_dn,
LDB_SCOPE_BASE, attrs, NULL);
if (ret) {
errstr = ldb_errstring(ldb);
goto failed;
}
if (res->count != 1) {
errstr = "incorrect number of results from base search";
goto failed;
}
ntds_guid = talloc(tmp_ctx, struct GUID);
if (ntds_guid == NULL) {
goto failed;
}
*ntds_guid = samdb_result_guid(res->msgs[0], attribute);
if (GUID_all_zero(ntds_guid)) {
if (ldb_msg_find_ldb_val(res->msgs[0], attribute)) {
errstr = "failed to find the GUID attribute";
} else {
errstr = "failed to parse the GUID";
}
goto failed;
}
/* cache the domain_sid in the ldb */
if (ldb_set_opaque(ldb, cache_name, ntds_guid) != LDB_SUCCESS) {
errstr = "ldb_set_opaque() failed";
goto failed;
}
talloc_steal(ldb, ntds_guid);
talloc_free(tmp_ctx);
return ntds_guid;
failed:
DBG_WARNING("Failed to find our own NTDS Settings %s in the ldb: %s!\n",
attribute, errstr);
talloc_free(tmp_ctx);
return NULL;
}
/*
work out the ntds settings objectGUID for the current open ldb
*/
const struct GUID *samdb_ntds_objectGUID(struct ldb_context *ldb)
{
return samdb_ntds_GUID(ldb, "objectGUID", "cache.ntds_guid");
}
/*
work out the ntds settings invocationId for the current open ldb
*/
const struct GUID *samdb_ntds_invocation_id(struct ldb_context *ldb)
{
return samdb_ntds_GUID(ldb, "invocationId", "cache.invocation_id");
}
static bool samdb_set_ntds_GUID(struct ldb_context *ldb,
const struct GUID *ntds_guid_in,
const char *attribute,
const char *cache_name)
{
TALLOC_CTX *tmp_ctx;
struct GUID *ntds_guid_new;
struct GUID *ntds_guid_old;
/* see if we have a cached copy */
ntds_guid_old = (struct GUID *)ldb_get_opaque(ldb, cache_name);
tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
goto failed;
}
ntds_guid_new = talloc(tmp_ctx, struct GUID);
if (!ntds_guid_new) {
goto failed;
}
*ntds_guid_new = *ntds_guid_in;
/* cache the domain_sid in the ldb */
if (ldb_set_opaque(ldb, cache_name, ntds_guid_new) != LDB_SUCCESS) {
goto failed;
}
talloc_steal(ldb, ntds_guid_new);
talloc_free(tmp_ctx);
talloc_free(ntds_guid_old);
return true;
failed:
DBG_WARNING("Failed to set our own cached %s in the ldb!\n",
attribute);
talloc_free(tmp_ctx);
return false;
}
bool samdb_set_ntds_objectGUID(struct ldb_context *ldb, const struct GUID *ntds_guid_in)
{
return samdb_set_ntds_GUID(ldb,
ntds_guid_in,
"objectGUID",
"cache.ntds_guid");
}
bool samdb_set_ntds_invocation_id(struct ldb_context *ldb, const struct GUID *invocation_id_in)
{
return samdb_set_ntds_GUID(ldb,
invocation_id_in,
"invocationId",
"cache.invocation_id");
}
/*
work out the server dn for the current open ldb
*/
struct ldb_dn *samdb_server_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
{
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
struct ldb_dn *dn;
if (!tmp_ctx) {
return NULL;
}
dn = ldb_dn_get_parent(mem_ctx, samdb_ntds_settings_dn(ldb, tmp_ctx));
talloc_free(tmp_ctx);
return dn;
}
/*
work out the server dn for the current open ldb
*/
struct ldb_dn *samdb_server_site_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
{
struct ldb_dn *server_dn;
struct ldb_dn *servers_dn;
struct ldb_dn *server_site_dn;
/* TODO: there must be a saner way to do this!! */
server_dn = samdb_server_dn(ldb, mem_ctx);
if (!server_dn) return NULL;
servers_dn = ldb_dn_get_parent(mem_ctx, server_dn);
talloc_free(server_dn);
if (!servers_dn) return NULL;
server_site_dn = ldb_dn_get_parent(mem_ctx, servers_dn);
talloc_free(servers_dn);
return server_site_dn;
}
/*
find the site name from a computers DN record
*/
int samdb_find_site_for_computer(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx, struct ldb_dn *computer_dn,
const char **site_name)
{
int ret;
struct ldb_dn *dn;
const struct ldb_val *rdn_val;
*site_name = NULL;
ret = samdb_reference_dn(ldb, mem_ctx, computer_dn, "serverReferenceBL", &dn);
if (ret != LDB_SUCCESS) {
return ret;
}
if (!ldb_dn_remove_child_components(dn, 2)) {
talloc_free(dn);
return LDB_ERR_INVALID_DN_SYNTAX;
}
rdn_val = ldb_dn_get_rdn_val(dn);
if (rdn_val == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
(*site_name) = talloc_strndup(mem_ctx, (const char *)rdn_val->data, rdn_val->length);
talloc_free(dn);
if (!*site_name) {
return LDB_ERR_OPERATIONS_ERROR;
}
return LDB_SUCCESS;
}
/*
find the NTDS GUID from a computers DN record
*/
int samdb_find_ntdsguid_for_computer(struct ldb_context *ldb, struct ldb_dn *computer_dn,
struct GUID *ntds_guid)
{
int ret;
struct ldb_dn *dn;
*ntds_guid = GUID_zero();
ret = samdb_reference_dn(ldb, ldb, computer_dn, "serverReferenceBL", &dn);
if (ret != LDB_SUCCESS) {
return ret;
}
if (!ldb_dn_add_child_fmt(dn, "CN=NTDS Settings")) {
talloc_free(dn);
return LDB_ERR_OPERATIONS_ERROR;
}
ret = dsdb_find_guid_by_dn(ldb, dn, ntds_guid);
talloc_free(dn);
return ret;
}
/*
find a 'reference' DN that points at another object
(eg. serverReference, rIDManagerReference etc)
*/
int samdb_reference_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn *base,
const char *attribute, struct ldb_dn **dn)
{
const char *attrs[2];
struct ldb_result *res;
int ret;
attrs[0] = attribute;
attrs[1] = NULL;
ret = dsdb_search(ldb, mem_ctx, &res, base, LDB_SCOPE_BASE, attrs, DSDB_SEARCH_ONE_ONLY|DSDB_SEARCH_SHOW_EXTENDED_DN, NULL);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb, "Cannot find DN %s to get attribute %s for reference dn: %s",
ldb_dn_get_linearized(base), attribute, ldb_errstring(ldb));
return ret;
}
*dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx, res->msgs[0], attribute);
if (!*dn) {
if (!ldb_msg_find_element(res->msgs[0], attribute)) {
ldb_asprintf_errstring(ldb, "Cannot find attribute %s of %s to calculate reference dn", attribute,
ldb_dn_get_linearized(base));
} else {
ldb_asprintf_errstring(ldb, "Cannot interpret attribute %s of %s as a dn", attribute,
ldb_dn_get_linearized(base));
}
talloc_free(res);
return LDB_ERR_NO_SUCH_ATTRIBUTE;
}
talloc_free(res);
return LDB_SUCCESS;
}
/*
find if a DN (must have GUID component!) is our ntdsDsa
*/
int samdb_dn_is_our_ntdsa(struct ldb_context *ldb, struct ldb_dn *dn, bool *is_ntdsa)
{
NTSTATUS status;
struct GUID dn_guid;
const struct GUID *our_ntds_guid;
status = dsdb_get_extended_dn_guid(dn, &dn_guid, "GUID");
if (!NT_STATUS_IS_OK(status)) {
return LDB_ERR_OPERATIONS_ERROR;
}
our_ntds_guid = samdb_ntds_objectGUID(ldb);
if (!our_ntds_guid) {
DEBUG(0, ("Failed to find our NTDS Settings GUID for comparison with %s - %s\n", ldb_dn_get_linearized(dn), ldb_errstring(ldb)));
return LDB_ERR_OPERATIONS_ERROR;
}
*is_ntdsa = GUID_equal(&dn_guid, our_ntds_guid);
return LDB_SUCCESS;
}
/*
find a 'reference' DN that points at another object and indicate if it is our ntdsDsa
*/
int samdb_reference_dn_is_our_ntdsa(struct ldb_context *ldb, struct ldb_dn *base,
const char *attribute, bool *is_ntdsa)
{
int ret;
struct ldb_dn *referenced_dn;
TALLOC_CTX *tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
ret = samdb_reference_dn(ldb, tmp_ctx, base, attribute, &referenced_dn);
if (ret != LDB_SUCCESS) {
DEBUG(0, ("Failed to find object %s for attribute %s - %s\n", ldb_dn_get_linearized(base), attribute, ldb_errstring(ldb)));
return ret;
}
ret = samdb_dn_is_our_ntdsa(ldb, referenced_dn, is_ntdsa);
talloc_free(tmp_ctx);
return ret;
}
/*
find our machine account via the serverReference attribute in the
server DN
*/
int samdb_server_reference_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
{
struct ldb_dn *server_dn;
int ret;
server_dn = samdb_server_dn(ldb, mem_ctx);
if (server_dn == NULL) {
return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
ret = samdb_reference_dn(ldb, mem_ctx, server_dn, "serverReference", dn);
talloc_free(server_dn);
return ret;
}
/*
find the RID Manager$ DN via the rIDManagerReference attribute in the
base DN
*/
int samdb_rid_manager_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
{
return samdb_reference_dn(ldb, mem_ctx, ldb_get_default_basedn(ldb),
"rIDManagerReference", dn);
}
/*
find the RID Set DN via the rIDSetReferences attribute in our
machine account DN
*/
int samdb_rid_set_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn **dn)
{
struct ldb_dn *server_ref_dn = NULL;
int ret;
ret = samdb_server_reference_dn(ldb, mem_ctx, &server_ref_dn);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = samdb_reference_dn(ldb, mem_ctx, server_ref_dn, "rIDSetReferences", dn);
talloc_free(server_ref_dn);
return ret;
}
const char *samdb_server_site_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
{
const struct ldb_val *val = ldb_dn_get_rdn_val(samdb_server_site_dn(ldb,
mem_ctx));
if (val == NULL) {
return NULL;
}
return (const char *) val->data;
}
/*
* Finds the client site by using the client's IP address.
* The "subnet_name" returns the name of the subnet if parameter != NULL
*
* Has a Windows-based fallback to provide the only site available, or an empty
* string if there are multiple sites.
*/
const char *samdb_client_site_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
const char *ip_address, char **subnet_name,
bool fallback)
{
const char *attrs[] = { "cn", "siteObject", NULL };
struct ldb_dn *sites_container_dn = NULL;
struct ldb_dn *subnets_dn = NULL;
struct ldb_dn *sites_dn = NULL;
struct ldb_result *res = NULL;
const struct ldb_val *val = NULL;
const char *site_name = NULL;
const char *l_subnet_name = NULL;
const char *allow_list[2] = { NULL, NULL };
unsigned int i, count;
int ret;
/*
* if we don't have a client ip e.g. ncalrpc
* the server site is the client site
*/
if (ip_address == NULL) {
return samdb_server_site_name(ldb, mem_ctx);
}
sites_container_dn = samdb_sites_dn(ldb, mem_ctx);
if (sites_container_dn == NULL) {
goto exit;
}
subnets_dn = ldb_dn_copy(mem_ctx, sites_container_dn);
if ( ! ldb_dn_add_child_fmt(subnets_dn, "CN=Subnets")) {
goto exit;
}
ret = ldb_search(ldb, mem_ctx, &res, subnets_dn, LDB_SCOPE_ONELEVEL,
attrs, NULL);
if (ret == LDB_ERR_NO_SUCH_OBJECT) {
count = 0;
} else if (ret != LDB_SUCCESS) {
goto exit;
} else {
count = res->count;
}
for (i = 0; i < count; i++) {
l_subnet_name = ldb_msg_find_attr_as_string(res->msgs[i], "cn",
NULL);
allow_list[0] = l_subnet_name;
if (allow_access_nolog(NULL, allow_list, "", ip_address)) {
sites_dn = ldb_msg_find_attr_as_dn(ldb, mem_ctx,
res->msgs[i],
"siteObject");
if (sites_dn == NULL) {
/* No reference, maybe another subnet matches */
continue;
}
/* "val" cannot be NULL here since "sites_dn" != NULL */
val = ldb_dn_get_rdn_val(sites_dn);
site_name = talloc_strdup(mem_ctx,
(const char *) val->data);
TALLOC_FREE(sites_dn);
break;
}
}
if (site_name == NULL && fallback) {
/* This is the Windows Server fallback rule: when no subnet
* exists and we have only one site available then use it (it
* is for sure the same as our server site). If more sites do
* exist then we don't know which one to use and set the site
* name to "". */
size_t cnt = 0;
ret = dsdb_domain_count(
ldb,
&cnt,
sites_container_dn,
NULL,
LDB_SCOPE_SUBTREE,
"(objectClass=site)");
if (ret != LDB_SUCCESS) {
goto exit;
}
if (cnt == 1) {
site_name = samdb_server_site_name(ldb, mem_ctx);
} else {
site_name = talloc_strdup(mem_ctx, "");
}
l_subnet_name = NULL;
}
if (subnet_name != NULL) {
*subnet_name = talloc_strdup(mem_ctx, l_subnet_name);
}
exit:
TALLOC_FREE(sites_container_dn);
TALLOC_FREE(subnets_dn);
TALLOC_FREE(res);
return site_name;
}
/*
work out if we are the PDC for the domain of the current open ldb
*/
bool samdb_is_pdc(struct ldb_context *ldb)
{
int ret;
bool is_pdc;
ret = samdb_reference_dn_is_our_ntdsa(ldb, ldb_get_default_basedn(ldb), "fsmoRoleOwner",
&is_pdc);
if (ret != LDB_SUCCESS) {
DEBUG(1,("Failed to find if we are the PDC for this ldb: Searching for fSMORoleOwner in %s failed: %s\n",
ldb_dn_get_linearized(ldb_get_default_basedn(ldb)),
ldb_errstring(ldb)));
return false;
}
return is_pdc;
}
/*
work out if we are a Global Catalog server for the domain of the current open ldb
*/
bool samdb_is_gc(struct ldb_context *ldb)
{
uint32_t options = 0;
if (samdb_ntds_options(ldb, &options) != LDB_SUCCESS) {
return false;
}
return (options & DS_NTDSDSA_OPT_IS_GC) != 0;
}
/* Find a domain object in the parents of a particular DN. */
int samdb_search_for_parent_domain(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
struct ldb_dn **parent_dn, const char **errstring)
{
TALLOC_CTX *local_ctx;
struct ldb_dn *sdn = dn;
struct ldb_result *res = NULL;
int ret = LDB_SUCCESS;
const char *attrs[] = { NULL };
local_ctx = talloc_new(mem_ctx);
if (local_ctx == NULL) return ldb_oom(ldb);
while ((sdn = ldb_dn_get_parent(local_ctx, sdn))) {
ret = ldb_search(ldb, local_ctx, &res, sdn, LDB_SCOPE_BASE, attrs,
"(|(objectClass=domain)(objectClass=builtinDomain))");
if (ret == LDB_SUCCESS) {
if (res->count == 1) {
break;
}
} else {
break;
}
}
if (ret != LDB_SUCCESS) {
*errstring = talloc_asprintf(mem_ctx, "Error searching for parent domain of %s, failed searching for %s: %s",
ldb_dn_get_linearized(dn),
ldb_dn_get_linearized(sdn),
ldb_errstring(ldb));
talloc_free(local_ctx);
return ret;
}
/* should never be true with 'ret=LDB_SUCCESS', here to satisfy clang */
if (res == NULL) {
talloc_free(local_ctx);
return LDB_ERR_OTHER;
}
if (res->count != 1) {
*errstring = talloc_asprintf(mem_ctx, "Invalid dn (%s), not child of a domain object",
ldb_dn_get_linearized(dn));
DEBUG(0,(__location__ ": %s\n", *errstring));
talloc_free(local_ctx);
return LDB_ERR_CONSTRAINT_VIOLATION;
}
*parent_dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
talloc_free(local_ctx);
return ret;
}
static void pwd_timeout_debug(struct tevent_context *unused1,
struct tevent_timer *unused2,
struct timeval unused3,
void *unused4)
{
DEBUG(0, ("WARNING: check_password_complexity: password script "
"took more than 1 second to run\n"));
}
/*
* Performs checks on a user password (plaintext UNIX format - attribute
* "password"). The remaining parameters have to be extracted from the domain
* object in the AD.
*
* Result codes from "enum samr_ValidationStatus" (consider "samr.idl")
*/
enum samr_ValidationStatus samdb_check_password(TALLOC_CTX *mem_ctx,
struct loadparm_context *lp_ctx,
const char *account_name,
const char *user_principal_name,
const char *full_name,
const DATA_BLOB *utf8_blob,
const uint32_t pwdProperties,
const uint32_t minPwdLength)
{
const struct loadparm_substitution *lp_sub =
lpcfg_noop_substitution();
char *password_script = NULL;
const char *utf8_pw = (const char *)utf8_blob->data;
/*
* This looks strange because it is.
*
* The check for the number of characters in the password
* should clearly not be against the byte length, or else a
* single UTF8 character would count for more than one.
*
* We have chosen to use the number of 16-bit units that the
* password encodes to as the measure of length. This is not
* the same as the number of codepoints, if a password
* contains a character beyond the Basic Multilingual Plane
* (above 65535) it will count for more than one "character".
*/
size_t password_characters_roughly = strlen_m(utf8_pw);
/* checks if the "minPwdLength" property is satisfied */
if (minPwdLength > password_characters_roughly) {
return SAMR_VALIDATION_STATUS_PWD_TOO_SHORT;
}
/* We might not be asked to check the password complexity */
if (!(pwdProperties & DOMAIN_PASSWORD_COMPLEX)) {
return SAMR_VALIDATION_STATUS_SUCCESS;
}
if (password_characters_roughly == 0) {
return SAMR_VALIDATION_STATUS_NOT_COMPLEX_ENOUGH;
}
password_script = lpcfg_check_password_script(lp_ctx, lp_sub, mem_ctx);
if (password_script != NULL && *password_script != '\0') {
int check_ret = 0;
int error = 0;
ssize_t nwritten = 0;
struct tevent_context *event_ctx = NULL;
struct tevent_req *req = NULL;
int cps_stdin = -1;
const char * const cmd[4] = {
"/bin/sh", "-c",
password_script,
NULL
};
event_ctx = tevent_context_init(mem_ctx);
if (event_ctx == NULL) {
TALLOC_FREE(password_script);
return SAMR_VALIDATION_STATUS_PASSWORD_FILTER_ERROR;
}
/* Gives a warning after 1 second, terminates after 10 */
tevent_add_timer(event_ctx, event_ctx,
tevent_timeval_current_ofs(1, 0),
pwd_timeout_debug, NULL);
check_ret = setenv("SAMBA_CPS_ACCOUNT_NAME", account_name, 1);
if (check_ret != 0) {
TALLOC_FREE(password_script);
TALLOC_FREE(event_ctx);
return SAMR_VALIDATION_STATUS_PASSWORD_FILTER_ERROR;
}
if (user_principal_name != NULL) {
check_ret = setenv("SAMBA_CPS_USER_PRINCIPAL_NAME",
user_principal_name, 1);
} else {
unsetenv("SAMBA_CPS_USER_PRINCIPAL_NAME");
}
if (check_ret != 0) {
TALLOC_FREE(password_script);
TALLOC_FREE(event_ctx);
return SAMR_VALIDATION_STATUS_PASSWORD_FILTER_ERROR;
}
if (full_name != NULL) {
check_ret = setenv("SAMBA_CPS_FULL_NAME", full_name, 1);
} else {
unsetenv("SAMBA_CPS_FULL_NAME");
}
if (check_ret != 0) {
TALLOC_FREE(password_script);
TALLOC_FREE(event_ctx);
return SAMR_VALIDATION_STATUS_PASSWORD_FILTER_ERROR;
}
req = samba_runcmd_send(event_ctx, event_ctx,
tevent_timeval_current_ofs(10, 0),
100, 100, cmd, NULL);
unsetenv("SAMBA_CPS_ACCOUNT_NAME");
unsetenv("SAMBA_CPS_USER_PRINCIPAL_NAME");
unsetenv("SAMBA_CPS_FULL_NAME");
if (req == NULL) {
TALLOC_FREE(password_script);
TALLOC_FREE(event_ctx);
return SAMR_VALIDATION_STATUS_PASSWORD_FILTER_ERROR;
}
cps_stdin = samba_runcmd_export_stdin(req);
nwritten = write_data(
cps_stdin, utf8_blob->data, utf8_blob->length);
if (nwritten == -1) {
close(cps_stdin);
TALLOC_FREE(password_script);
TALLOC_FREE(event_ctx);
return SAMR_VALIDATION_STATUS_PASSWORD_FILTER_ERROR;
}
close(cps_stdin);
if (!tevent_req_poll(req, event_ctx)) {
TALLOC_FREE(password_script);
TALLOC_FREE(event_ctx);
return SAMR_VALIDATION_STATUS_PASSWORD_FILTER_ERROR;
}
check_ret = samba_runcmd_recv(req, &error);
TALLOC_FREE(event_ctx);
if (error == ETIMEDOUT) {
DEBUG(0, ("check_password_complexity: check password script took too long!\n"));
TALLOC_FREE(password_script);
return SAMR_VALIDATION_STATUS_PASSWORD_FILTER_ERROR;
}
DEBUG(5,("check_password_complexity: check password script (%s) "
"returned [%d]\n", password_script, check_ret));
if (check_ret != 0) {
DEBUG(1,("check_password_complexity: "
"check password script said new password is not good "
"enough!\n"));
TALLOC_FREE(password_script);
return SAMR_VALIDATION_STATUS_NOT_COMPLEX_ENOUGH;
}
TALLOC_FREE(password_script);
return SAMR_VALIDATION_STATUS_SUCCESS;
}
TALLOC_FREE(password_script);
/*
* Here are the standard AD password quality rules, which we
* run after the script.
*/
if (!check_password_quality(utf8_pw)) {
return SAMR_VALIDATION_STATUS_NOT_COMPLEX_ENOUGH;
}
return SAMR_VALIDATION_STATUS_SUCCESS;
}
/*
* Callback for "samdb_set_password" password change
*/
int samdb_set_password_callback(struct ldb_request *req, struct ldb_reply *ares)
{
int ret;
if (!ares) {
return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
ret = ares->error;
req->context = talloc_steal(req,
ldb_reply_get_control(ares, DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID));
talloc_free(ares);
return ldb_request_done(req, ret);
}
if (ares->type != LDB_REPLY_DONE) {
talloc_free(ares);
return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
}
req->context = talloc_steal(req,
ldb_reply_get_control(ares, DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID));
talloc_free(ares);
return ldb_request_done(req, LDB_SUCCESS);
}
/*
* Sets the user password using plaintext UTF16 (attribute "new_password") or
* LM (attribute "lmNewHash") or NT (attribute "ntNewHash") hash. Also pass
* the old LM and/or NT hash (attributes "lmOldHash"/"ntOldHash") if it is a
* user change or not. The "rejectReason" gives some more information if the
* change failed.
*
* Results: NT_STATUS_OK, NT_STATUS_INVALID_PARAMETER, NT_STATUS_UNSUCCESSFUL,
* NT_STATUS_WRONG_PASSWORD, NT_STATUS_PASSWORD_RESTRICTION
*/
static NTSTATUS samdb_set_password_internal(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
struct ldb_dn *user_dn, struct ldb_dn *domain_dn,
const DATA_BLOB *new_password,
const struct samr_Password *lmNewHash,
const struct samr_Password *ntNewHash,
const struct samr_Password *lmOldHash,
const struct samr_Password *ntOldHash,
enum samPwdChangeReason *reject_reason,
struct samr_DomInfo1 **_dominfo,
bool permit_interdomain_trust)
{
struct ldb_message *msg;
struct ldb_message_element *el;
struct ldb_request *req;
struct dsdb_control_password_change_status *pwd_stat = NULL;
int ret;
bool hash_values = false;
NTSTATUS status = NT_STATUS_OK;
#define CHECK_RET(x) \
if (x != LDB_SUCCESS) { \
talloc_free(msg); \
return NT_STATUS_NO_MEMORY; \
}
msg = ldb_msg_new(mem_ctx);
if (msg == NULL) {
return NT_STATUS_NO_MEMORY;
}
msg->dn = user_dn;
if ((new_password != NULL)
&& ((lmNewHash == NULL) && (ntNewHash == NULL))) {
/* we have the password as plaintext UTF16 */
CHECK_RET(ldb_msg_add_value(msg, "clearTextPassword",
new_password, NULL));
el = ldb_msg_find_element(msg, "clearTextPassword");
el->flags = LDB_FLAG_MOD_REPLACE;
} else if ((new_password == NULL)
&& ((lmNewHash != NULL) || (ntNewHash != NULL))) {
/* we have a password as LM and/or NT hash */
if (lmNewHash != NULL) {
CHECK_RET(samdb_msg_add_hash(ldb, mem_ctx, msg,
"dBCSPwd", lmNewHash));
el = ldb_msg_find_element(msg, "dBCSPwd");
el->flags = LDB_FLAG_MOD_REPLACE;
}
if (ntNewHash != NULL) {
CHECK_RET(samdb_msg_add_hash(ldb, mem_ctx, msg,
"unicodePwd", ntNewHash));
el = ldb_msg_find_element(msg, "unicodePwd");
el->flags = LDB_FLAG_MOD_REPLACE;
}
hash_values = true;
} else {
/* the password wasn't specified correctly */
talloc_free(msg);
return NT_STATUS_INVALID_PARAMETER;
}
/* build modify request */
ret = ldb_build_mod_req(&req, ldb, mem_ctx, msg, NULL, NULL,
samdb_set_password_callback, NULL);
if (ret != LDB_SUCCESS) {
talloc_free(msg);
return NT_STATUS_NO_MEMORY;
}
/* A password change operation */
if ((ntOldHash != NULL) || (lmOldHash != NULL)) {
struct dsdb_control_password_change *change;
change = talloc(req, struct dsdb_control_password_change);
if (change == NULL) {
talloc_free(req);
talloc_free(msg);
return NT_STATUS_NO_MEMORY;
}
change->old_nt_pwd_hash = ntOldHash;
change->old_lm_pwd_hash = lmOldHash;
ret = ldb_request_add_control(req,
DSDB_CONTROL_PASSWORD_CHANGE_OID,
true, change);
if (ret != LDB_SUCCESS) {
talloc_free(req);
talloc_free(msg);
return NT_STATUS_NO_MEMORY;
}
}
if (hash_values) {
ret = ldb_request_add_control(req,
DSDB_CONTROL_PASSWORD_HASH_VALUES_OID,
true, NULL);
if (ret != LDB_SUCCESS) {
talloc_free(req);
talloc_free(msg);
return NT_STATUS_NO_MEMORY;
}
}
if (permit_interdomain_trust) {
ret = ldb_request_add_control(req,
DSDB_CONTROL_PERMIT_INTERDOMAIN_TRUST_UAC_OID,
false, NULL);
if (ret != LDB_SUCCESS) {
talloc_free(req);
talloc_free(msg);
return NT_STATUS_NO_MEMORY;
}
}
ret = ldb_request_add_control(req,
DSDB_CONTROL_PASSWORD_CHANGE_STATUS_OID,
true, NULL);
if (ret != LDB_SUCCESS) {
talloc_free(req);
talloc_free(msg);
return NT_STATUS_NO_MEMORY;
}
ret = dsdb_autotransaction_request(ldb, req);
if (req->context != NULL) {
struct ldb_control *control = talloc_get_type_abort(req->context,
struct ldb_control);
pwd_stat = talloc_get_type_abort(control->data,
struct dsdb_control_password_change_status);
talloc_steal(mem_ctx, pwd_stat);
}
talloc_free(req);
talloc_free(msg);
/* Sets the domain info (if requested) */
if (_dominfo != NULL) {
struct samr_DomInfo1 *dominfo;
dominfo = talloc_zero(mem_ctx, struct samr_DomInfo1);
if (dominfo == NULL) {
return NT_STATUS_NO_MEMORY;
}
if (pwd_stat != NULL) {
dominfo->min_password_length = pwd_stat->domain_data.minPwdLength;
dominfo->password_properties = pwd_stat->domain_data.pwdProperties;
dominfo->password_history_length = pwd_stat->domain_data.pwdHistoryLength;
dominfo->max_password_age = pwd_stat->domain_data.maxPwdAge;
dominfo->min_password_age = pwd_stat->domain_data.minPwdAge;
}
*_dominfo = dominfo;
}
if (reject_reason != NULL) {
if (pwd_stat != NULL) {
*reject_reason = pwd_stat->reject_reason;
} else {
*reject_reason = SAM_PWD_CHANGE_NO_ERROR;
}
}
if (pwd_stat != NULL) {
talloc_free(pwd_stat);
}
if (ret == LDB_ERR_CONSTRAINT_VIOLATION) {
const char *errmsg = ldb_errstring(ldb);
char *endptr = NULL;
WERROR werr = WERR_GEN_FAILURE;
status = NT_STATUS_UNSUCCESSFUL;
if (errmsg != NULL) {
werr = W_ERROR(strtol(errmsg, &endptr, 16));
DBG_WARNING("%s\n", errmsg);
}
if (endptr != errmsg) {
if (W_ERROR_EQUAL(werr, WERR_INVALID_PASSWORD)) {
status = NT_STATUS_WRONG_PASSWORD;
}
if (W_ERROR_EQUAL(werr, WERR_PASSWORD_RESTRICTION)) {
status = NT_STATUS_PASSWORD_RESTRICTION;
}
}
} else if (ret == LDB_ERR_NO_SUCH_OBJECT) {
/* don't let the caller know if an account doesn't exist */
status = NT_STATUS_WRONG_PASSWORD;
} else if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
status = NT_STATUS_ACCESS_DENIED;
} else if (ret != LDB_SUCCESS) {
DEBUG(1, ("Failed to set password on %s: %s\n",
ldb_dn_get_linearized(user_dn),
ldb_errstring(ldb)));
status = NT_STATUS_UNSUCCESSFUL;
}
return status;
}
NTSTATUS samdb_set_password(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
struct ldb_dn *user_dn, struct ldb_dn *domain_dn,
const DATA_BLOB *new_password,
const struct samr_Password *lmNewHash,
const struct samr_Password *ntNewHash,
const struct samr_Password *lmOldHash,
const struct samr_Password *ntOldHash,
enum samPwdChangeReason *reject_reason,
struct samr_DomInfo1 **_dominfo)
{
return samdb_set_password_internal(ldb, mem_ctx,
user_dn, domain_dn,
new_password,
lmNewHash, ntNewHash,
lmOldHash, ntOldHash,
reject_reason, _dominfo,
false); /* reject trusts */
}
/*
* Sets the user password using plaintext UTF16 (attribute "new_password") or
* LM (attribute "lmNewHash") or NT (attribute "ntNewHash") hash. Also pass
* the old LM and/or NT hash (attributes "lmOldHash"/"ntOldHash") if it is a
* user change or not. The "rejectReason" gives some more information if the
* change failed.
*
* This wrapper function for "samdb_set_password" takes a SID as input rather
* than a user DN.
*
* This call encapsulates a new LDB transaction for changing the password;
* therefore the user hasn't to start a new one.
*
* Results: NT_STATUS_OK, NT_STATUS_INTERNAL_DB_CORRUPTION,
* NT_STATUS_INVALID_PARAMETER, NT_STATUS_UNSUCCESSFUL,
* NT_STATUS_WRONG_PASSWORD, NT_STATUS_PASSWORD_RESTRICTION,
* NT_STATUS_TRANSACTION_ABORTED, NT_STATUS_NO_SUCH_USER
*/
NTSTATUS samdb_set_password_sid(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
const struct dom_sid *user_sid,
const uint32_t *new_version, /* optional for trusts */
const DATA_BLOB *new_password,
const struct samr_Password *lmNewHash,
const struct samr_Password *ntNewHash,
const struct samr_Password *lmOldHash,
const struct samr_Password *ntOldHash,
enum samPwdChangeReason *reject_reason,
struct samr_DomInfo1 **_dominfo)
{
TALLOC_CTX *frame = talloc_stackframe();
NTSTATUS nt_status;
const char * const user_attrs[] = {
"userAccountControl",
"sAMAccountName",
NULL
};
struct ldb_message *user_msg = NULL;
int ret;
uint32_t uac = 0;
ret = ldb_transaction_start(ldb);
if (ret != LDB_SUCCESS) {
DEBUG(1, ("Failed to start transaction: %s\n", ldb_errstring(ldb)));
TALLOC_FREE(frame);
return NT_STATUS_TRANSACTION_ABORTED;
}
ret = dsdb_search_one(ldb, frame, &user_msg, ldb_get_default_basedn(ldb),
LDB_SCOPE_SUBTREE, user_attrs, 0,
"(&(objectSid=%s)(objectClass=user))",
ldap_encode_ndr_dom_sid(frame, user_sid));
if (ret != LDB_SUCCESS) {
ldb_transaction_cancel(ldb);
DEBUG(3, ("samdb_set_password_sid: SID[%s] not found in samdb %s - %s, "
"returning NO_SUCH_USER\n",
dom_sid_string(frame, user_sid),
ldb_strerror(ret), ldb_errstring(ldb)));
TALLOC_FREE(frame);
return NT_STATUS_NO_SUCH_USER;
}
uac = ldb_msg_find_attr_as_uint(user_msg, "userAccountControl", 0);
if (!(uac & UF_ACCOUNT_TYPE_MASK)) {
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: invalid "
"userAccountControl[0x%08X] for SID[%s] DN[%s], "
"returning NO_SUCH_USER\n",
(unsigned)uac, dom_sid_string(frame, user_sid),
ldb_dn_get_linearized(user_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_NO_SUCH_USER;
}
if (uac & UF_INTERDOMAIN_TRUST_ACCOUNT) {
const char * const tdo_attrs[] = {
"trustAuthIncoming",
"trustDirection",
NULL
};
struct ldb_message *tdo_msg = NULL;
const char *account_name = NULL;
uint32_t trust_direction;
uint32_t i;
const struct ldb_val *old_val = NULL;
struct trustAuthInOutBlob old_blob = {
.count = 0,
};
uint32_t old_version = 0;
struct AuthenticationInformation *old_version_a = NULL;
uint32_t _new_version = 0;
struct trustAuthInOutBlob new_blob = {
.count = 0,
};
struct ldb_val new_val = {
.length = 0,
};
struct timeval tv = timeval_current();
NTTIME now = timeval_to_nttime(&tv);
enum ndr_err_code ndr_err;
if (new_password == NULL && ntNewHash == NULL) {
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: "
"no new password provided "
"sAMAccountName for SID[%s] DN[%s], "
"returning INVALID_PARAMETER\n",
dom_sid_string(frame, user_sid),
ldb_dn_get_linearized(user_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_PARAMETER;
}
if (new_password != NULL && ntNewHash != NULL) {
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: "
"two new passwords provided "
"sAMAccountName for SID[%s] DN[%s], "
"returning INVALID_PARAMETER\n",
dom_sid_string(frame, user_sid),
ldb_dn_get_linearized(user_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_PARAMETER;
}
if (new_password != NULL && (new_password->length % 2)) {
ldb_transaction_cancel(ldb);
DEBUG(2, ("samdb_set_password_sid: "
"invalid utf16 length (%zu) "
"sAMAccountName for SID[%s] DN[%s], "
"returning WRONG_PASSWORD\n",
new_password->length,
dom_sid_string(frame, user_sid),
ldb_dn_get_linearized(user_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_WRONG_PASSWORD;
}
if (new_password != NULL && new_password->length >= 500) {
ldb_transaction_cancel(ldb);
DEBUG(2, ("samdb_set_password_sid: "
"utf16 password too long (%zu) "
"sAMAccountName for SID[%s] DN[%s], "
"returning WRONG_PASSWORD\n",
new_password->length,
dom_sid_string(frame, user_sid),
ldb_dn_get_linearized(user_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_WRONG_PASSWORD;
}
account_name = ldb_msg_find_attr_as_string(user_msg,
"sAMAccountName", NULL);
if (account_name == NULL) {
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: missing "
"sAMAccountName for SID[%s] DN[%s], "
"returning NO_SUCH_USER\n",
dom_sid_string(frame, user_sid),
ldb_dn_get_linearized(user_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_NO_SUCH_USER;
}
nt_status = dsdb_trust_search_tdo_by_type(ldb,
SEC_CHAN_DOMAIN,
account_name,
tdo_attrs,
frame, &tdo_msg);
if (!NT_STATUS_IS_OK(nt_status)) {
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: dsdb_trust_search_tdo "
"failed(%s) for sAMAccountName[%s] SID[%s] DN[%s], "
"returning INTERNAL_DB_CORRUPTION\n",
nt_errstr(nt_status), account_name,
dom_sid_string(frame, user_sid),
ldb_dn_get_linearized(user_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
trust_direction = ldb_msg_find_attr_as_int(tdo_msg,
"trustDirection", 0);
if (!(trust_direction & LSA_TRUST_DIRECTION_INBOUND)) {
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: direction[0x%08X] is "
"not inbound for sAMAccountName[%s] "
"DN[%s] TDO[%s], "
"returning INTERNAL_DB_CORRUPTION\n",
(unsigned)trust_direction,
account_name,
ldb_dn_get_linearized(user_msg->dn),
ldb_dn_get_linearized(tdo_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
old_val = ldb_msg_find_ldb_val(tdo_msg, "trustAuthIncoming");
if (old_val != NULL) {
ndr_err = ndr_pull_struct_blob(old_val, frame, &old_blob,
(ndr_pull_flags_fn_t)ndr_pull_trustAuthInOutBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: "
"failed(%s) to parse "
"trustAuthOutgoing sAMAccountName[%s] "
"DN[%s] TDO[%s], "
"returning INTERNAL_DB_CORRUPTION\n",
ndr_map_error2string(ndr_err),
account_name,
ldb_dn_get_linearized(user_msg->dn),
ldb_dn_get_linearized(tdo_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
}
for (i = old_blob.current.count; i > 0; i--) {
struct AuthenticationInformation *a =
&old_blob.current.array[i - 1];
switch (a->AuthType) {
case TRUST_AUTH_TYPE_NONE:
if (i == old_blob.current.count) {
/*
* remove TRUST_AUTH_TYPE_NONE at the
* end
*/
old_blob.current.count--;
}
break;
case TRUST_AUTH_TYPE_VERSION:
old_version_a = a;
old_version = a->AuthInfo.version.version;
break;
case TRUST_AUTH_TYPE_CLEAR:
break;
case TRUST_AUTH_TYPE_NT4OWF:
break;
}
}
if (new_version == NULL) {
_new_version = 0;
new_version = &_new_version;
}
if (old_version_a != NULL && *new_version != (old_version + 1)) {
old_version_a->LastUpdateTime = now;
old_version_a->AuthType = TRUST_AUTH_TYPE_NONE;
}
new_blob.count = MAX(old_blob.current.count, 2);
new_blob.current.array = talloc_zero_array(frame,
struct AuthenticationInformation,
new_blob.count);
if (new_blob.current.array == NULL) {
ldb_transaction_cancel(ldb);
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
new_blob.previous.array = talloc_zero_array(frame,
struct AuthenticationInformation,
new_blob.count);
if (new_blob.current.array == NULL) {
ldb_transaction_cancel(ldb);
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
for (i = 0; i < old_blob.current.count; i++) {
struct AuthenticationInformation *o =
&old_blob.current.array[i];
struct AuthenticationInformation *p =
&new_blob.previous.array[i];
*p = *o;
new_blob.previous.count++;
}
for (; i < new_blob.count; i++) {
struct AuthenticationInformation *pi =
&new_blob.previous.array[i];
if (i == 0) {
/*
* new_blob.previous is still empty so
* we'll do new_blob.previous = new_blob.current
* below.
*/
break;
}
pi->LastUpdateTime = now;
pi->AuthType = TRUST_AUTH_TYPE_NONE;
new_blob.previous.count++;
}
for (i = 0; i < new_blob.count; i++) {
struct AuthenticationInformation *ci =
&new_blob.current.array[i];
ci->LastUpdateTime = now;
switch (i) {
case 0:
if (ntNewHash != NULL) {
ci->AuthType = TRUST_AUTH_TYPE_NT4OWF;
ci->AuthInfo.nt4owf.password = *ntNewHash;
break;
}
ci->AuthType = TRUST_AUTH_TYPE_CLEAR;
ci->AuthInfo.clear.size = new_password->length;
ci->AuthInfo.clear.password = new_password->data;
break;
case 1:
ci->AuthType = TRUST_AUTH_TYPE_VERSION;
ci->AuthInfo.version.version = *new_version;
break;
default:
ci->AuthType = TRUST_AUTH_TYPE_NONE;
break;
}
new_blob.current.count++;
}
if (new_blob.previous.count == 0) {
TALLOC_FREE(new_blob.previous.array);
new_blob.previous = new_blob.current;
}
ndr_err = ndr_push_struct_blob(&new_val, frame, &new_blob,
(ndr_push_flags_fn_t)ndr_push_trustAuthInOutBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: "
"failed(%s) to generate "
"trustAuthOutgoing sAMAccountName[%s] "
"DN[%s] TDO[%s], "
"returning UNSUCCESSFUL\n",
ndr_map_error2string(ndr_err),
account_name,
ldb_dn_get_linearized(user_msg->dn),
ldb_dn_get_linearized(tdo_msg->dn)));
TALLOC_FREE(frame);
return NT_STATUS_UNSUCCESSFUL;
}
tdo_msg->num_elements = 0;
TALLOC_FREE(tdo_msg->elements);
ret = ldb_msg_add_empty(tdo_msg, "trustAuthIncoming",
LDB_FLAG_MOD_REPLACE, NULL);
if (ret != LDB_SUCCESS) {
ldb_transaction_cancel(ldb);
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
ret = ldb_msg_add_value(tdo_msg, "trustAuthIncoming",
&new_val, NULL);
if (ret != LDB_SUCCESS) {
ldb_transaction_cancel(ldb);
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
ret = ldb_modify(ldb, tdo_msg);
if (ret != LDB_SUCCESS) {
nt_status = dsdb_ldb_err_to_ntstatus(ret);
ldb_transaction_cancel(ldb);
DEBUG(1, ("samdb_set_password_sid: "
"failed to replace "
"trustAuthOutgoing sAMAccountName[%s] "
"DN[%s] TDO[%s], "
"%s - %s\n",
account_name,
ldb_dn_get_linearized(user_msg->dn),
ldb_dn_get_linearized(tdo_msg->dn),
nt_errstr(nt_status), ldb_errstring(ldb)));
TALLOC_FREE(frame);
return nt_status;
}
}
nt_status = samdb_set_password_internal(ldb, mem_ctx,
user_msg->dn, NULL,
new_password,
lmNewHash, ntNewHash,
lmOldHash, ntOldHash,
reject_reason, _dominfo,
true); /* permit trusts */
if (!NT_STATUS_IS_OK(nt_status)) {
ldb_transaction_cancel(ldb);
TALLOC_FREE(frame);
return nt_status;
}
ret = ldb_transaction_commit(ldb);
if (ret != LDB_SUCCESS) {
DEBUG(0,("Failed to commit transaction to change password on %s: %s\n",
ldb_dn_get_linearized(user_msg->dn),
ldb_errstring(ldb)));
TALLOC_FREE(frame);
return NT_STATUS_TRANSACTION_ABORTED;
}
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
NTSTATUS samdb_create_foreign_security_principal(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
struct dom_sid *sid, struct ldb_dn **ret_dn)
{
struct ldb_message *msg;
struct ldb_dn *basedn = NULL;
char *sidstr;
int ret;
sidstr = dom_sid_string(mem_ctx, sid);
NT_STATUS_HAVE_NO_MEMORY(sidstr);
/* We might have to create a ForeignSecurityPrincipal, even if this user
* is in our own domain */
msg = ldb_msg_new(sidstr);
if (msg == NULL) {
talloc_free(sidstr);
return NT_STATUS_NO_MEMORY;
}
ret = dsdb_wellknown_dn(sam_ctx, sidstr,
ldb_get_default_basedn(sam_ctx),
DS_GUID_FOREIGNSECURITYPRINCIPALS_CONTAINER,
&basedn);
if (ret != LDB_SUCCESS) {
DEBUG(0, ("Failed to find DN for "
"ForeignSecurityPrincipal container - %s\n", ldb_errstring(sam_ctx)));
talloc_free(sidstr);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
/* add core elements to the ldb_message for the alias */
msg->dn = basedn;
if ( ! ldb_dn_add_child_fmt(msg->dn, "CN=%s", sidstr)) {
talloc_free(sidstr);
return NT_STATUS_NO_MEMORY;
}
ret = ldb_msg_add_string(msg, "objectClass",
"foreignSecurityPrincipal");
if (ret != LDB_SUCCESS) {
talloc_free(sidstr);
return NT_STATUS_NO_MEMORY;
}
/* create the alias */
ret = ldb_add(sam_ctx, msg);
if (ret != LDB_SUCCESS) {
DEBUG(0,("Failed to create foreignSecurityPrincipal "
"record %s: %s\n",
ldb_dn_get_linearized(msg->dn),
ldb_errstring(sam_ctx)));
talloc_free(sidstr);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
*ret_dn = talloc_steal(mem_ctx, msg->dn);
talloc_free(sidstr);
return NT_STATUS_OK;
}
/*
Find the DN of a domain, assuming it to be a dotted.dns name
*/
struct ldb_dn *samdb_dns_domain_to_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx, const char *dns_domain)
{
unsigned int i;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
const char *binary_encoded;
const char * const *split_realm;
struct ldb_dn *dn;
if (!tmp_ctx) {
return NULL;
}
split_realm = (const char * const *)str_list_make(tmp_ctx, dns_domain, ".");
if (!split_realm) {
talloc_free(tmp_ctx);
return NULL;
}
dn = ldb_dn_new(mem_ctx, ldb, NULL);
for (i=0; split_realm[i]; i++) {
binary_encoded = ldb_binary_encode_string(tmp_ctx, split_realm[i]);
if (!ldb_dn_add_base_fmt(dn, "dc=%s", binary_encoded)) {
DEBUG(2, ("Failed to add dc=%s element to DN %s\n",
binary_encoded, ldb_dn_get_linearized(dn)));
talloc_free(tmp_ctx);
return NULL;
}
}
if (!ldb_dn_validate(dn)) {
DEBUG(2, ("Failed to validated DN %s\n",
ldb_dn_get_linearized(dn)));
talloc_free(tmp_ctx);
return NULL;
}
talloc_free(tmp_ctx);
return dn;
}
/*
Find the DNS equivalent of a DN, in dotted DNS form
*/
char *samdb_dn_to_dns_domain(TALLOC_CTX *mem_ctx, struct ldb_dn *dn)
{
int i, num_components = ldb_dn_get_comp_num(dn);
char *dns_name = talloc_strdup(mem_ctx, "");
if (dns_name == NULL) {
return NULL;
}
for (i=0; i<num_components; i++) {
const struct ldb_val *v = ldb_dn_get_component_val(dn, i);
char *s;
if (v == NULL) {
talloc_free(dns_name);
return NULL;
}
s = talloc_asprintf_append_buffer(dns_name, "%*.*s.",
(int)v->length, (int)v->length, (char *)v->data);
if (s == NULL) {
talloc_free(dns_name);
return NULL;
}
dns_name = s;
}
/* remove the last '.' */
if (dns_name[0] != 0) {
dns_name[strlen(dns_name)-1] = 0;
}
return dns_name;
}
/*
Find the DNS _msdcs name for a given NTDS GUID. The resulting DNS
name is based on the forest DNS name
*/
char *samdb_ntds_msdcs_dns_name(struct ldb_context *samdb,
TALLOC_CTX *mem_ctx,
const struct GUID *ntds_guid)
{
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
const char *guid_str;
struct ldb_dn *forest_dn;
const char *dnsforest;
char *ret;
guid_str = GUID_string(tmp_ctx, ntds_guid);
if (guid_str == NULL) {
talloc_free(tmp_ctx);
return NULL;
}
forest_dn = ldb_get_root_basedn(samdb);
if (forest_dn == NULL) {
talloc_free(tmp_ctx);
return NULL;
}
dnsforest = samdb_dn_to_dns_domain(tmp_ctx, forest_dn);
if (dnsforest == NULL) {
talloc_free(tmp_ctx);
return NULL;
}
ret = talloc_asprintf(mem_ctx, "%s._msdcs.%s", guid_str, dnsforest);
talloc_free(tmp_ctx);
return ret;
}
/*
Find the DN of a domain, be it the netbios or DNS name
*/
struct ldb_dn *samdb_domain_to_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
const char *domain_name)
{
const char * const domain_ref_attrs[] = {
"ncName", NULL
};
const char * const domain_ref2_attrs[] = {
NULL
};
struct ldb_result *res_domain_ref;
char *escaped_domain = ldb_binary_encode_string(mem_ctx, domain_name);
/* find the domain's DN */
int ret_domain = ldb_search(ldb, mem_ctx,
&res_domain_ref,
samdb_partitions_dn(ldb, mem_ctx),
LDB_SCOPE_ONELEVEL,
domain_ref_attrs,
"(&(nETBIOSName=%s)(objectclass=crossRef))",
escaped_domain);
if (ret_domain != LDB_SUCCESS) {
return NULL;
}
if (res_domain_ref->count == 0) {
ret_domain = ldb_search(ldb, mem_ctx,
&res_domain_ref,
samdb_dns_domain_to_dn(ldb, mem_ctx, domain_name),
LDB_SCOPE_BASE,
domain_ref2_attrs,
"(objectclass=domain)");
if (ret_domain != LDB_SUCCESS) {
return NULL;
}
if (res_domain_ref->count == 1) {
return res_domain_ref->msgs[0]->dn;
}
return NULL;
}
if (res_domain_ref->count > 1) {
DEBUG(0,("Found %d records matching domain [%s]\n",
ret_domain, domain_name));
return NULL;
}
return samdb_result_dn(ldb, mem_ctx, res_domain_ref->msgs[0], "nCName", NULL);
}
/*
use a GUID to find a DN
*/
int dsdb_find_dn_by_guid(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
const struct GUID *guid,
uint32_t dsdb_flags,
struct ldb_dn **dn)
{
int ret;
struct ldb_result *res;
const char *attrs[] = { NULL };
char *guid_str = GUID_string(mem_ctx, guid);
if (!guid_str) {
return ldb_operr(ldb);
}
ret = dsdb_search(ldb, mem_ctx, &res, NULL, LDB_SCOPE_SUBTREE, attrs,
DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
DSDB_SEARCH_SHOW_EXTENDED_DN |
DSDB_SEARCH_ONE_ONLY | dsdb_flags,
"objectGUID=%s", guid_str);
talloc_free(guid_str);
if (ret != LDB_SUCCESS) {
return ret;
}
*dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
talloc_free(res);
return LDB_SUCCESS;
}
/*
use a DN to find a GUID with a given attribute name
*/
int dsdb_find_guid_attr_by_dn(struct ldb_context *ldb,
struct ldb_dn *dn, const char *attribute,
struct GUID *guid)
{
int ret;
struct ldb_result *res = NULL;
const char *attrs[2];
TALLOC_CTX *tmp_ctx = talloc_new(ldb);
attrs[0] = attribute;
attrs[1] = NULL;
ret = dsdb_search_dn(ldb, tmp_ctx, &res, dn, attrs,
DSDB_SEARCH_SHOW_DELETED |
DSDB_SEARCH_SHOW_RECYCLED);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* satisfy clang */
if (res == NULL) {
talloc_free(tmp_ctx);
return LDB_ERR_OTHER;
}
if (res->count < 1) {
talloc_free(tmp_ctx);
return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
*guid = samdb_result_guid(res->msgs[0], attribute);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
use a DN to find a GUID
*/
int dsdb_find_guid_by_dn(struct ldb_context *ldb,
struct ldb_dn *dn, struct GUID *guid)
{
return dsdb_find_guid_attr_by_dn(ldb, dn, "objectGUID", guid);
}
/*
adds the given GUID to the given ldb_message. This value is added
for the given attr_name (may be either "objectGUID" or "parentGUID").
*/
int dsdb_msg_add_guid(struct ldb_message *msg,
struct GUID *guid,
const char *attr_name)
{
int ret;
struct ldb_val v;
NTSTATUS status;
TALLOC_CTX *tmp_ctx = talloc_init("dsdb_msg_add_guid");
status = GUID_to_ndr_blob(guid, tmp_ctx, &v);
if (!NT_STATUS_IS_OK(status)) {
ret = LDB_ERR_OPERATIONS_ERROR;
goto done;
}
ret = ldb_msg_add_steal_value(msg, attr_name, &v);
if (ret != LDB_SUCCESS) {
DEBUG(4,(__location__ ": Failed to add %s to the message\n",
attr_name));
goto done;
}
ret = LDB_SUCCESS;
done:
talloc_free(tmp_ctx);
return ret;
}
/*
use a DN to find a SID
*/
int dsdb_find_sid_by_dn(struct ldb_context *ldb,
struct ldb_dn *dn, struct dom_sid *sid)
{
int ret;
struct ldb_result *res = NULL;
const char *attrs[] = { "objectSid", NULL };
TALLOC_CTX *tmp_ctx = talloc_new(ldb);
struct dom_sid *s;
ZERO_STRUCTP(sid);
ret = dsdb_search_dn(ldb, tmp_ctx, &res, dn, attrs,
DSDB_SEARCH_SHOW_DELETED |
DSDB_SEARCH_SHOW_RECYCLED);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
if (res == NULL) {
talloc_free(tmp_ctx);
return LDB_ERR_OTHER;
}
if (res->count < 1) {
talloc_free(tmp_ctx);
return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
s = samdb_result_dom_sid(tmp_ctx, res->msgs[0], "objectSid");
if (s == NULL) {
talloc_free(tmp_ctx);
return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
*sid = *s;
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
use a SID to find a DN
*/
int dsdb_find_dn_by_sid(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct dom_sid *sid, struct ldb_dn **dn)
{
int ret;
struct ldb_result *res;
const char *attrs[] = { NULL };
char *sid_str = ldap_encode_ndr_dom_sid(mem_ctx, sid);
if (!sid_str) {
return ldb_operr(ldb);
}
ret = dsdb_search(ldb, mem_ctx, &res, NULL, LDB_SCOPE_SUBTREE, attrs,
DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
DSDB_SEARCH_SHOW_EXTENDED_DN |
DSDB_SEARCH_ONE_ONLY,
"objectSid=%s", sid_str);
talloc_free(sid_str);
if (ret != LDB_SUCCESS) {
return ret;
}
*dn = talloc_steal(mem_ctx, res->msgs[0]->dn);
talloc_free(res);
return LDB_SUCCESS;
}
/*
load a repsFromTo blob list for a given partition GUID
attr must be "repsFrom" or "repsTo"
*/
WERROR dsdb_loadreps(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
const char *attr, struct repsFromToBlob **r, uint32_t *count)
{
const char *attrs[] = { attr, NULL };
struct ldb_result *res = NULL;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
unsigned int i;
struct ldb_message_element *el;
int ret;
*r = NULL;
*count = 0;
ret = dsdb_search_dn(sam_ctx, tmp_ctx, &res, dn, attrs, 0);
if (ret == LDB_ERR_NO_SUCH_OBJECT) {
/* partition hasn't been replicated yet */
return WERR_OK;
}
if (ret != LDB_SUCCESS) {
DEBUG(0,("dsdb_loadreps: failed to read partition object: %s\n", ldb_errstring(sam_ctx)));
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
/* satisfy clang */
if (res == NULL) {
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
el = ldb_msg_find_element(res->msgs[0], attr);
if (el == NULL) {
/* it's OK to be empty */
talloc_free(tmp_ctx);
return WERR_OK;
}
*count = el->num_values;
*r = talloc_array(mem_ctx, struct repsFromToBlob, *count);
if (*r == NULL) {
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
for (i=0; i<(*count); i++) {
enum ndr_err_code ndr_err;
ndr_err = ndr_pull_struct_blob(&el->values[i],
mem_ctx,
&(*r)[i],
(ndr_pull_flags_fn_t)ndr_pull_repsFromToBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
}
talloc_free(tmp_ctx);
return WERR_OK;
}
/*
save the repsFromTo blob list for a given partition GUID
attr must be "repsFrom" or "repsTo"
*/
WERROR dsdb_savereps(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
const char *attr, struct repsFromToBlob *r, uint32_t count)
{
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
struct ldb_message *msg;
struct ldb_message_element *el;
unsigned int i;
msg = ldb_msg_new(tmp_ctx);
msg->dn = dn;
if (ldb_msg_add_empty(msg, attr, LDB_FLAG_MOD_REPLACE, &el) != LDB_SUCCESS) {
goto failed;
}
el->values = talloc_array(msg, struct ldb_val, count);
if (!el->values) {
goto failed;
}
for (i=0; i<count; i++) {
struct ldb_val v;
enum ndr_err_code ndr_err;
ndr_err = ndr_push_struct_blob(&v, tmp_ctx,
&r[i],
(ndr_push_flags_fn_t)ndr_push_repsFromToBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
goto failed;
}
el->num_values++;
el->values[i] = v;
}
if (dsdb_modify(sam_ctx, msg, 0) != LDB_SUCCESS) {
DEBUG(0,("Failed to store %s - %s\n", attr, ldb_errstring(sam_ctx)));
goto failed;
}
talloc_free(tmp_ctx);
return WERR_OK;
failed:
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
/*
load the uSNHighest and the uSNUrgent attributes from the @REPLCHANGED
object for a partition
*/
int dsdb_load_partition_usn(struct ldb_context *ldb, struct ldb_dn *dn,
uint64_t *uSN, uint64_t *urgent_uSN)
{
struct ldb_request *req;
int ret;
TALLOC_CTX *tmp_ctx = talloc_new(ldb);
struct dsdb_control_current_partition *p_ctrl;
struct ldb_result *res;
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
ret = ldb_build_search_req(&req, ldb, tmp_ctx,
ldb_dn_new(tmp_ctx, ldb, "@REPLCHANGED"),
LDB_SCOPE_BASE,
NULL, NULL,
NULL,
res, ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
p_ctrl = talloc(req, struct dsdb_control_current_partition);
if (p_ctrl == NULL) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
p_ctrl->version = DSDB_CONTROL_CURRENT_PARTITION_VERSION;
p_ctrl->dn = dn;
ret = ldb_request_add_control(req,
DSDB_CONTROL_CURRENT_PARTITION_OID,
false, p_ctrl);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* Run the new request */
ret = ldb_request(ldb, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
if (ret == LDB_ERR_NO_SUCH_OBJECT || ret == LDB_ERR_INVALID_DN_SYNTAX) {
/* it hasn't been created yet, which means
an implicit value of zero */
*uSN = 0;
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
if (res->count < 1) {
*uSN = 0;
if (urgent_uSN) {
*urgent_uSN = 0;
}
} else {
*uSN = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNHighest", 0);
if (urgent_uSN) {
*urgent_uSN = ldb_msg_find_attr_as_uint64(res->msgs[0], "uSNUrgent", 0);
}
}
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
int drsuapi_DsReplicaCursor2_compare(const struct drsuapi_DsReplicaCursor2 *c1,
const struct drsuapi_DsReplicaCursor2 *c2)
{
return GUID_compare(&c1->source_dsa_invocation_id, &c2->source_dsa_invocation_id);
}
int drsuapi_DsReplicaCursor_compare(const struct drsuapi_DsReplicaCursor *c1,
const struct drsuapi_DsReplicaCursor *c2)
{
return GUID_compare(&c1->source_dsa_invocation_id, &c2->source_dsa_invocation_id);
}
/*
see if a computer identified by its invocationId is a RODC
*/
int samdb_is_rodc(struct ldb_context *sam_ctx, const struct GUID *objectGUID, bool *is_rodc)
{
/* 1) find the DN for this servers NTDSDSA object
2) search for the msDS-isRODC attribute
3) if not present then not a RODC
4) if present and TRUE then is a RODC
*/
struct ldb_dn *config_dn;
const char *attrs[] = { "msDS-isRODC", NULL };
int ret;
struct ldb_result *res;
TALLOC_CTX *tmp_ctx = talloc_new(sam_ctx);
config_dn = ldb_get_config_basedn(sam_ctx);
if (!config_dn) {
talloc_free(tmp_ctx);
return ldb_operr(sam_ctx);
}
ret = dsdb_search(sam_ctx, tmp_ctx, &res, config_dn, LDB_SCOPE_SUBTREE, attrs,
DSDB_SEARCH_ONE_ONLY, "objectGUID=%s", GUID_string(tmp_ctx, objectGUID));
if (ret == LDB_ERR_NO_SUCH_OBJECT) {
*is_rodc = false;
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
if (ret != LDB_SUCCESS) {
DEBUG(1,(("Failed to find our own NTDS Settings object by objectGUID=%s!\n"),
GUID_string(tmp_ctx, objectGUID)));
*is_rodc = false;
talloc_free(tmp_ctx);
return ret;
}
ret = ldb_msg_find_attr_as_bool(res->msgs[0], "msDS-isRODC", 0);
*is_rodc = (ret == 1);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
see if we are a RODC
*/
int samdb_rodc(struct ldb_context *sam_ctx, bool *am_rodc)
{
const struct GUID *objectGUID;
int ret;
bool *cached;
/* see if we have a cached copy */
cached = (bool *)ldb_get_opaque(sam_ctx, "cache.am_rodc");
if (cached) {
*am_rodc = *cached;
return LDB_SUCCESS;
}
objectGUID = samdb_ntds_objectGUID(sam_ctx);
if (!objectGUID) {
return ldb_operr(sam_ctx);
}
ret = samdb_is_rodc(sam_ctx, objectGUID, am_rodc);
if (ret != LDB_SUCCESS) {
return ret;
}
cached = talloc(sam_ctx, bool);
if (cached == NULL) {
return ldb_oom(sam_ctx);
}
*cached = *am_rodc;
ret = ldb_set_opaque(sam_ctx, "cache.am_rodc", cached);
if (ret != LDB_SUCCESS) {
talloc_free(cached);
return ldb_operr(sam_ctx);
}
return LDB_SUCCESS;
}
int samdb_dns_host_name(struct ldb_context *sam_ctx, const char **host_name)
{
const char *_host_name = NULL;
const char *attrs[] = { "dnsHostName", NULL };
TALLOC_CTX *tmp_ctx = NULL;
int ret;
struct ldb_result *res = NULL;
_host_name = (const char *)ldb_get_opaque(sam_ctx, "cache.dns_host_name");
if (_host_name != NULL) {
*host_name = _host_name;
return LDB_SUCCESS;
}
tmp_ctx = talloc_new(sam_ctx);
ret = dsdb_search_dn(sam_ctx, tmp_ctx, &res, NULL, attrs, 0);
if (res == NULL || res->count != 1 || ret != LDB_SUCCESS) {
DEBUG(0, ("Failed to get rootDSE for dnsHostName: %s",
ldb_errstring(sam_ctx)));
TALLOC_FREE(tmp_ctx);
return ret;
}
_host_name = ldb_msg_find_attr_as_string(res->msgs[0],
"dnsHostName",
NULL);
if (_host_name == NULL) {
DEBUG(0, ("Failed to get dnsHostName from rootDSE"));
TALLOC_FREE(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
ret = ldb_set_opaque(sam_ctx, "cache.dns_host_name",
discard_const_p(char *, _host_name));
if (ret != LDB_SUCCESS) {
TALLOC_FREE(tmp_ctx);
return ldb_operr(sam_ctx);
}
*host_name = talloc_steal(sam_ctx, _host_name);
TALLOC_FREE(tmp_ctx);
return LDB_SUCCESS;
}
bool samdb_set_am_rodc(struct ldb_context *ldb, bool am_rodc)
{
TALLOC_CTX *tmp_ctx;
bool *cached;
tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
goto failed;
}
cached = talloc(tmp_ctx, bool);
if (!cached) {
goto failed;
}
*cached = am_rodc;
if (ldb_set_opaque(ldb, "cache.am_rodc", cached) != LDB_SUCCESS) {
goto failed;
}
talloc_steal(ldb, cached);
talloc_free(tmp_ctx);
return true;
failed:
DEBUG(1,("Failed to set our own cached am_rodc in the ldb!\n"));
talloc_free(tmp_ctx);
return false;
}
/*
* return NTDSSiteSettings options. See MS-ADTS 7.1.1.2.2.1.1
* flags are DS_NTDSSETTINGS_OPT_*
*/
int samdb_ntds_site_settings_options(struct ldb_context *ldb_ctx,
uint32_t *options)
{
int rc;
TALLOC_CTX *tmp_ctx;
struct ldb_result *res;
struct ldb_dn *site_dn;
const char *attrs[] = { "options", NULL };
tmp_ctx = talloc_new(ldb_ctx);
if (tmp_ctx == NULL)
goto failed;
/* Retrieve the site dn for the ldb that we
* have open. This is our local site.
*/
site_dn = samdb_server_site_dn(ldb_ctx, tmp_ctx);
if (site_dn == NULL)
goto failed;
/* Perform a one level (child) search from the local
* site distinguided name. We're looking for the
* "options" attribute within the nTDSSiteSettings
* object
*/
rc = ldb_search(ldb_ctx, tmp_ctx, &res, site_dn,
LDB_SCOPE_ONELEVEL, attrs,
"objectClass=nTDSSiteSettings");
if (rc != LDB_SUCCESS || res->count != 1)
goto failed;
*options = ldb_msg_find_attr_as_uint(res->msgs[0], "options", 0);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
failed:
DEBUG(1,("Failed to find our NTDS Site Settings options in ldb!\n"));
talloc_free(tmp_ctx);
return ldb_error(ldb_ctx, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
/*
return NTDS options flags. See MS-ADTS 7.1.1.2.2.1.2.1.1
flags are DS_NTDS_OPTION_*
*/
int samdb_ntds_options(struct ldb_context *ldb, uint32_t *options)
{
TALLOC_CTX *tmp_ctx;
const char *attrs[] = { "options", NULL };
int ret;
struct ldb_result *res;
tmp_ctx = talloc_new(ldb);
if (tmp_ctx == NULL) {
goto failed;
}
ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb, tmp_ctx), LDB_SCOPE_BASE, attrs, NULL);
if (ret != LDB_SUCCESS) {
goto failed;
}
if (res->count != 1) {
goto failed;
}
*options = ldb_msg_find_attr_as_uint(res->msgs[0], "options", 0);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
failed:
DEBUG(1,("Failed to find our own NTDS Settings options in the ldb!\n"));
talloc_free(tmp_ctx);
return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
const char* samdb_ntds_object_category(TALLOC_CTX *tmp_ctx, struct ldb_context *ldb)
{
const char *attrs[] = { "objectCategory", NULL };
int ret;
struct ldb_result *res;
ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb, tmp_ctx), LDB_SCOPE_BASE, attrs, NULL);
if (ret != LDB_SUCCESS) {
goto failed;
}
if (res->count != 1) {
goto failed;
}
return ldb_msg_find_attr_as_string(res->msgs[0], "objectCategory", NULL);
failed:
DEBUG(1,("Failed to find our own NTDS Settings objectCategory in the ldb!\n"));
return NULL;
}
/*
* Function which generates a "lDAPDisplayName" attribute from a "CN" one.
* Algorithm implemented according to MS-ADTS 3.1.1.2.3.4
*/
const char *samdb_cn_to_lDAPDisplayName(TALLOC_CTX *mem_ctx, const char *cn)
{
char **tokens, *ret;
size_t i;
tokens = str_list_make(mem_ctx, cn, " -_");
if (tokens == NULL || tokens[0] == NULL) {
return NULL;
}
/* "tolower()" and "toupper()" should also work properly on 0x00 */
tokens[0][0] = tolower(tokens[0][0]);
for (i = 1; tokens[i] != NULL; i++)
tokens[i][0] = toupper(tokens[i][0]);
ret = talloc_strdup(mem_ctx, tokens[0]);
for (i = 1; tokens[i] != NULL; i++)
ret = talloc_asprintf_append_buffer(ret, "%s", tokens[i]);
talloc_free(tokens);
return ret;
}
/*
* This detects and returns the domain functional level (DS_DOMAIN_FUNCTION_*)
*/
int dsdb_functional_level(struct ldb_context *ldb)
{
int *domainFunctionality =
talloc_get_type(ldb_get_opaque(ldb, "domainFunctionality"), int);
if (!domainFunctionality) {
/* this is expected during initial provision */
DEBUG(4,(__location__ ": WARNING: domainFunctionality not setup\n"));
return DS_DOMAIN_FUNCTION_2000;
}
return *domainFunctionality;
}
/*
* This detects and returns the forest functional level (DS_DOMAIN_FUNCTION_*)
*/
int dsdb_forest_functional_level(struct ldb_context *ldb)
{
int *forestFunctionality =
talloc_get_type(ldb_get_opaque(ldb, "forestFunctionality"), int);
if (!forestFunctionality) {
DEBUG(0,(__location__ ": WARNING: forestFunctionality not setup\n"));
return DS_DOMAIN_FUNCTION_2000;
}
return *forestFunctionality;
}
/*
set a GUID in an extended DN structure
*/
int dsdb_set_extended_dn_guid(struct ldb_dn *dn, const struct GUID *guid, const char *component_name)
{
struct ldb_val v;
NTSTATUS status;
int ret;
status = GUID_to_ndr_blob(guid, dn, &v);
if (!NT_STATUS_IS_OK(status)) {
return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
}
ret = ldb_dn_set_extended_component(dn, component_name, &v);
data_blob_free(&v);
return ret;
}
/*
return a GUID from a extended DN structure
*/
NTSTATUS dsdb_get_extended_dn_guid(struct ldb_dn *dn, struct GUID *guid, const char *component_name)
{
const struct ldb_val *v;
v = ldb_dn_get_extended_component(dn, component_name);
if (v == NULL) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
return GUID_from_ndr_blob(v, guid);
}
/*
return a uint64_t from a extended DN structure
*/
NTSTATUS dsdb_get_extended_dn_uint64(struct ldb_dn *dn, uint64_t *val, const char *component_name)
{
const struct ldb_val *v;
int error = 0;
v = ldb_dn_get_extended_component(dn, component_name);
if (v == NULL) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
/* Just check we don't allow the caller to fill our stack */
if (v->length >= 64) {
return NT_STATUS_INVALID_PARAMETER;
} else {
char s[v->length+1];
memcpy(s, v->data, v->length);
s[v->length] = 0;
*val = smb_strtoull(s, NULL, 0, &error, SMB_STR_STANDARD);
if (error != 0) {
return NT_STATUS_INVALID_PARAMETER;
}
}
return NT_STATUS_OK;
}
/*
return a NTTIME from a extended DN structure
*/
NTSTATUS dsdb_get_extended_dn_nttime(struct ldb_dn *dn, NTTIME *nttime, const char *component_name)
{
return dsdb_get_extended_dn_uint64(dn, nttime, component_name);
}
/*
return a uint32_t from a extended DN structure
*/
NTSTATUS dsdb_get_extended_dn_uint32(struct ldb_dn *dn, uint32_t *val, const char *component_name)
{
const struct ldb_val *v;
int error = 0;
v = ldb_dn_get_extended_component(dn, component_name);
if (v == NULL) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
/* Just check we don't allow the caller to fill our stack */
if (v->length >= 32) {
return NT_STATUS_INVALID_PARAMETER;
} else {
char s[v->length + 1];
memcpy(s, v->data, v->length);
s[v->length] = 0;
*val = smb_strtoul(s, NULL, 0, &error, SMB_STR_STANDARD);
if (error != 0) {
return NT_STATUS_INVALID_PARAMETER;
}
}
return NT_STATUS_OK;
}
/*
return a dom_sid from a extended DN structure
*/
NTSTATUS dsdb_get_extended_dn_sid(struct ldb_dn *dn, struct dom_sid *sid, const char *component_name)
{
const struct ldb_val *sid_blob;
enum ndr_err_code ndr_err;
sid_blob = ldb_dn_get_extended_component(dn, component_name);
if (!sid_blob) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
ndr_err = ndr_pull_struct_blob_all_noalloc(sid_blob, sid,
(ndr_pull_flags_fn_t)ndr_pull_dom_sid);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
return status;
}
return NT_STATUS_OK;
}
/*
return RMD_FLAGS directly from a ldb_dn
returns 0 if not found
*/
uint32_t dsdb_dn_rmd_flags(struct ldb_dn *dn)
{
uint32_t rmd_flags = 0;
NTSTATUS status = dsdb_get_extended_dn_uint32(dn, &rmd_flags,
"RMD_FLAGS");
if (NT_STATUS_IS_OK(status)) {
return rmd_flags;
}
return 0;
}
/*
return RMD_FLAGS directly from a ldb_val for a DN
returns 0 if RMD_FLAGS is not found
*/
uint32_t dsdb_dn_val_rmd_flags(const struct ldb_val *val)
{
const char *p;
uint32_t flags;
char *end;
int error = 0;
if (val->length < 13) {
return 0;
}
p = memmem(val->data, val->length, "<RMD_FLAGS=", 11);
if (!p) {
return 0;
}
flags = smb_strtoul(p+11, &end, 10, &error, SMB_STR_STANDARD);
if (!end || *end != '>' || error != 0) {
/* it must end in a > */
return 0;
}
return flags;
}
/*
return true if a ldb_val containing a DN in storage form is deleted
*/
bool dsdb_dn_is_deleted_val(const struct ldb_val *val)
{
return (dsdb_dn_val_rmd_flags(val) & DSDB_RMD_FLAG_DELETED) != 0;
}
/*
return true if a ldb_val containing a DN in storage form is
in the upgraded w2k3 linked attribute format
*/
bool dsdb_dn_is_upgraded_link_val(const struct ldb_val *val)
{
return memmem(val->data, val->length, "<RMD_VERSION=", 13) != NULL;
}
/*
return a DN for a wellknown GUID
*/
int dsdb_wellknown_dn(struct ldb_context *samdb, TALLOC_CTX *mem_ctx,
struct ldb_dn *nc_root, const char *wk_guid,
struct ldb_dn **wkguid_dn)
{
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
const char *attrs[] = { NULL };
int ret;
struct ldb_dn *dn;
struct ldb_result *res = NULL;
/* construct the magic WKGUID DN */
dn = ldb_dn_new_fmt(tmp_ctx, samdb, "<WKGUID=%s,%s>",
wk_guid, ldb_dn_get_linearized(nc_root));
if (!wkguid_dn) {
talloc_free(tmp_ctx);
return ldb_operr(samdb);
}
ret = dsdb_search_dn(samdb, tmp_ctx, &res, dn, attrs,
DSDB_SEARCH_SHOW_DELETED |
DSDB_SEARCH_SHOW_RECYCLED);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
/* fix clang warning */
if (res == NULL){
talloc_free(tmp_ctx);
return LDB_ERR_OTHER;
}
(*wkguid_dn) = talloc_steal(mem_ctx, res->msgs[0]->dn);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
static int dsdb_dn_compare_ptrs(struct ldb_dn **dn1, struct ldb_dn **dn2)
{
return ldb_dn_compare(*dn1, *dn2);
}
/*
find a NC root given a DN within the NC
*/
int dsdb_find_nc_root(struct ldb_context *samdb, TALLOC_CTX *mem_ctx, struct ldb_dn *dn,
struct ldb_dn **nc_root)
{
const char *root_attrs[] = { "namingContexts", NULL };
TALLOC_CTX *tmp_ctx;
int ret;
struct ldb_message_element *el;
struct ldb_result *root_res;
unsigned int i;
struct ldb_dn **nc_dns;
tmp_ctx = talloc_new(samdb);
if (tmp_ctx == NULL) {
return ldb_oom(samdb);
}
ret = ldb_search(samdb, tmp_ctx, &root_res,
ldb_dn_new(tmp_ctx, samdb, ""), LDB_SCOPE_BASE, root_attrs, NULL);
if (ret != LDB_SUCCESS || root_res->count == 0) {
DEBUG(1,("Searching for namingContexts in rootDSE failed: %s\n", ldb_errstring(samdb)));
talloc_free(tmp_ctx);
return ret;
}
el = ldb_msg_find_element(root_res->msgs[0], "namingContexts");
if ((el == NULL) || (el->num_values < 3)) {
struct ldb_message *tmp_msg;
DEBUG(5,("dsdb_find_nc_root: Finding a valid 'namingContexts' element in the RootDSE failed. Using a temporary list.\n"));
/* This generates a temporary list of NCs in order to let the
* provisioning work. */
tmp_msg = ldb_msg_new(tmp_ctx);
if (tmp_msg == NULL) {
talloc_free(tmp_ctx);
return ldb_oom(samdb);
}
ret = ldb_msg_add_steal_string(tmp_msg, "namingContexts",
ldb_dn_alloc_linearized(tmp_msg, ldb_get_schema_basedn(samdb)));
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = ldb_msg_add_steal_string(tmp_msg, "namingContexts",
ldb_dn_alloc_linearized(tmp_msg, ldb_get_config_basedn(samdb)));
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = ldb_msg_add_steal_string(tmp_msg, "namingContexts",
ldb_dn_alloc_linearized(tmp_msg, ldb_get_default_basedn(samdb)));
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
el = &tmp_msg->elements[0];
}
nc_dns = talloc_array(tmp_ctx, struct ldb_dn *, el->num_values);
if (!nc_dns) {
talloc_free(tmp_ctx);
return ldb_oom(samdb);
}
for (i=0; i<el->num_values; i++) {
nc_dns[i] = ldb_dn_from_ldb_val(nc_dns, samdb, &el->values[i]);
if (nc_dns[i] == NULL) {
talloc_free(tmp_ctx);
return ldb_operr(samdb);
}
}
TYPESAFE_QSORT(nc_dns, el->num_values, dsdb_dn_compare_ptrs);
for (i=0; i<el->num_values; i++) {
if (ldb_dn_compare_base(nc_dns[i], dn) == 0) {
(*nc_root) = talloc_steal(mem_ctx, nc_dns[i]);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
}
talloc_free(tmp_ctx);
return ldb_error(samdb, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
/*
find the deleted objects DN for any object, by looking for the NC
root, then looking up the wellknown GUID
*/
int dsdb_get_deleted_objects_dn(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx, struct ldb_dn *obj_dn,
struct ldb_dn **do_dn)
{
struct ldb_dn *nc_root;
int ret;
ret = dsdb_find_nc_root(ldb, mem_ctx, obj_dn, &nc_root);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = dsdb_wellknown_dn(ldb, mem_ctx, nc_root, DS_GUID_DELETED_OBJECTS_CONTAINER, do_dn);
talloc_free(nc_root);
return ret;
}
/*
return the tombstoneLifetime, in days
*/
int dsdb_tombstone_lifetime(struct ldb_context *ldb, uint32_t *lifetime)
{
struct ldb_dn *dn;
dn = ldb_get_config_basedn(ldb);
if (!dn) {
return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
dn = ldb_dn_copy(ldb, dn);
if (!dn) {
return ldb_operr(ldb);
}
/* see MS-ADTS section 7.1.1.2.4.1.1. There doesn't appear to
be a wellknown GUID for this */
if (!ldb_dn_add_child_fmt(dn, "CN=Directory Service,CN=Windows NT,CN=Services")) {
talloc_free(dn);
return ldb_operr(ldb);
}
*lifetime = samdb_search_uint(ldb, dn, 180, dn, "tombstoneLifetime", "objectClass=nTDSService");
talloc_free(dn);
return LDB_SUCCESS;
}
/*
compare a ldb_val to a string case insensitively
*/
int samdb_ldb_val_case_cmp(const char *s, struct ldb_val *v)
{
size_t len = strlen(s);
int ret;
if (len > v->length) return 1;
ret = strncasecmp(s, (const char *)v->data, v->length);
if (ret != 0) return ret;
if (v->length > len && v->data[len] != 0) {
return -1;
}
return 0;
}
/*
load the UDV for a partition in v2 format
The list is returned sorted, and with our local cursor added
*/
int dsdb_load_udv_v2(struct ldb_context *samdb, struct ldb_dn *dn, TALLOC_CTX *mem_ctx,
struct drsuapi_DsReplicaCursor2 **cursors, uint32_t *count)
{
static const char *attrs[] = { "replUpToDateVector", NULL };
struct ldb_result *r = NULL;
const struct ldb_val *ouv_value;
unsigned int i;
int ret;
uint64_t highest_usn = 0;
const struct GUID *our_invocation_id;
static const struct timeval tv1970;
NTTIME nt1970 = timeval_to_nttime(&tv1970);
ret = dsdb_search_dn(samdb, mem_ctx, &r, dn, attrs, DSDB_SEARCH_SHOW_RECYCLED|DSDB_SEARCH_SHOW_DELETED);
if (ret != LDB_SUCCESS) {
return ret;
}
/* fix clang warning */
if (r == NULL) {
return LDB_ERR_OTHER;
}
ouv_value = ldb_msg_find_ldb_val(r->msgs[0], "replUpToDateVector");
if (ouv_value) {
enum ndr_err_code ndr_err;
struct replUpToDateVectorBlob ouv;
ndr_err = ndr_pull_struct_blob(ouv_value, r, &ouv,
(ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
talloc_free(r);
return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
}
if (ouv.version != 2) {
/* we always store as version 2, and
* replUpToDateVector is not replicated
*/
return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
}
*count = ouv.ctr.ctr2.count;
*cursors = talloc_steal(mem_ctx, ouv.ctr.ctr2.cursors);
} else {
*count = 0;
*cursors = NULL;
}
talloc_free(r);
our_invocation_id = samdb_ntds_invocation_id(samdb);
if (!our_invocation_id) {
DEBUG(0,(__location__ ": No invocationID on samdb - %s\n", ldb_errstring(samdb)));
talloc_free(*cursors);
return ldb_operr(samdb);
}
ret = ldb_sequence_number(samdb, LDB_SEQ_HIGHEST_SEQ, &highest_usn);
if (ret != LDB_SUCCESS) {
/* nothing to add - this can happen after a vampire */
TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
return LDB_SUCCESS;
}
for (i=0; i<*count; i++) {
if (GUID_equal(our_invocation_id, &(*cursors)[i].source_dsa_invocation_id)) {
(*cursors)[i].highest_usn = highest_usn;
(*cursors)[i].last_sync_success = nt1970;
TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
return LDB_SUCCESS;
}
}
(*cursors) = talloc_realloc(mem_ctx, *cursors, struct drsuapi_DsReplicaCursor2, (*count)+1);
if (! *cursors) {
return ldb_oom(samdb);
}
(*cursors)[*count].source_dsa_invocation_id = *our_invocation_id;
(*cursors)[*count].highest_usn = highest_usn;
(*cursors)[*count].last_sync_success = nt1970;
(*count)++;
TYPESAFE_QSORT(*cursors, *count, drsuapi_DsReplicaCursor2_compare);
return LDB_SUCCESS;
}
/*
load the UDV for a partition in version 1 format
The list is returned sorted, and with our local cursor added
*/
int dsdb_load_udv_v1(struct ldb_context *samdb, struct ldb_dn *dn, TALLOC_CTX *mem_ctx,
struct drsuapi_DsReplicaCursor **cursors, uint32_t *count)
{
struct drsuapi_DsReplicaCursor2 *v2 = NULL;
uint32_t i;
int ret;
ret = dsdb_load_udv_v2(samdb, dn, mem_ctx, &v2, count);
if (ret != LDB_SUCCESS) {
return ret;
}
if (*count == 0) {
talloc_free(v2);
*cursors = NULL;
return LDB_SUCCESS;
}
*cursors = talloc_array(mem_ctx, struct drsuapi_DsReplicaCursor, *count);
if (*cursors == NULL) {
talloc_free(v2);
return ldb_oom(samdb);
}
for (i=0; i<*count; i++) {
(*cursors)[i].source_dsa_invocation_id = v2[i].source_dsa_invocation_id;
(*cursors)[i].highest_usn = v2[i].highest_usn;
}
talloc_free(v2);
return LDB_SUCCESS;
}
/*
add a set of controls to a ldb_request structure based on a set of
flags. See util.h for a list of available flags
*/
int dsdb_request_add_controls(struct ldb_request *req, uint32_t dsdb_flags)
{
int ret;
if (dsdb_flags & DSDB_SEARCH_SEARCH_ALL_PARTITIONS) {
struct ldb_search_options_control *options;
/* Using the phantom root control allows us to search all partitions */
options = talloc(req, struct ldb_search_options_control);
if (options == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
ret = ldb_request_add_control(req,
LDB_CONTROL_SEARCH_OPTIONS_OID,
true, options);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_SEARCH_NO_GLOBAL_CATALOG) {
ret = ldb_request_add_control(req,
DSDB_CONTROL_NO_GLOBAL_CATALOG,
false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_SEARCH_SHOW_DELETED) {
ret = ldb_request_add_control(req, LDB_CONTROL_SHOW_DELETED_OID, true, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_SEARCH_SHOW_RECYCLED) {
ret = ldb_request_add_control(req, LDB_CONTROL_SHOW_RECYCLED_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT) {
ret = ldb_request_add_control(req, DSDB_CONTROL_DN_STORAGE_FORMAT_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_SEARCH_SHOW_EXTENDED_DN) {
struct ldb_extended_dn_control *extended_ctrl = talloc(req, struct ldb_extended_dn_control);
if (!extended_ctrl) {
return LDB_ERR_OPERATIONS_ERROR;
}
extended_ctrl->type = 1;
ret = ldb_request_add_control(req, LDB_CONTROL_EXTENDED_DN_OID, true, extended_ctrl);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_SEARCH_REVEAL_INTERNALS) {
ret = ldb_request_add_control(req, LDB_CONTROL_REVEAL_INTERNALS, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_MODIFY_RELAX) {
ret = ldb_request_add_control(req, LDB_CONTROL_RELAX_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_MODIFY_PERMISSIVE) {
ret = ldb_request_add_control(req, LDB_CONTROL_PERMISSIVE_MODIFY_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_FLAG_AS_SYSTEM) {
ret = ldb_request_add_control(req, LDB_CONTROL_AS_SYSTEM_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_TREE_DELETE) {
ret = ldb_request_add_control(req, LDB_CONTROL_TREE_DELETE_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_PROVISION) {
ret = ldb_request_add_control(req, LDB_CONTROL_PROVISION_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
/* This is a special control to bypass the password_hash module for use in pdb_samba4 for Samba3 upgrades */
if (dsdb_flags & DSDB_BYPASS_PASSWORD_HASH) {
ret = ldb_request_add_control(req, DSDB_CONTROL_BYPASS_PASSWORD_HASH_OID, true, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_PASSWORD_BYPASS_LAST_SET) {
/*
* This must not be critical, as it will only be
* handled (and need to be handled) if the other
* attributes in the request bring password_hash into
* action
*/
ret = ldb_request_add_control(req, DSDB_CONTROL_PASSWORD_BYPASS_LAST_SET_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_REPLMD_VANISH_LINKS) {
ret = ldb_request_add_control(req, DSDB_CONTROL_REPLMD_VANISH_LINKS, true, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_MODIFY_PARTIAL_REPLICA) {
ret = ldb_request_add_control(req, DSDB_CONTROL_PARTIAL_REPLICA, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
if (dsdb_flags & DSDB_FLAG_REPLICATED_UPDATE) {
ret = ldb_request_add_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID, false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
return LDB_SUCCESS;
}
/*
returns true if a control with the specified "oid" exists
*/
bool dsdb_request_has_control(struct ldb_request *req, const char *oid)
{
return (ldb_request_get_control(req, oid) != NULL);
}
/*
an add with a set of controls
*/
int dsdb_add(struct ldb_context *ldb, const struct ldb_message *message,
uint32_t dsdb_flags)
{
struct ldb_request *req;
int ret;
ret = ldb_build_add_req(&req, ldb, ldb,
message,
NULL,
NULL,
ldb_op_default_callback,
NULL);
if (ret != LDB_SUCCESS) return ret;
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(req);
return ret;
}
ret = dsdb_autotransaction_request(ldb, req);
talloc_free(req);
return ret;
}
/*
a modify with a set of controls
*/
int dsdb_modify(struct ldb_context *ldb, const struct ldb_message *message,
uint32_t dsdb_flags)
{
struct ldb_request *req;
int ret;
ret = ldb_build_mod_req(&req, ldb, ldb,
message,
NULL,
NULL,
ldb_op_default_callback,
NULL);
if (ret != LDB_SUCCESS) return ret;
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(req);
return ret;
}
ret = dsdb_autotransaction_request(ldb, req);
talloc_free(req);
return ret;
}
/*
a delete with a set of flags
*/
int dsdb_delete(struct ldb_context *ldb, struct ldb_dn *dn,
uint32_t dsdb_flags)
{
struct ldb_request *req;
int ret;
ret = ldb_build_del_req(&req, ldb, ldb,
dn,
NULL,
NULL,
ldb_op_default_callback,
NULL);
if (ret != LDB_SUCCESS) return ret;
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(req);
return ret;
}
ret = dsdb_autotransaction_request(ldb, req);
talloc_free(req);
return ret;
}
/*
like dsdb_modify() but set all the element flags to
LDB_FLAG_MOD_REPLACE
*/
int dsdb_replace(struct ldb_context *ldb, struct ldb_message *msg, uint32_t dsdb_flags)
{
unsigned int i;
/* mark all the message elements as LDB_FLAG_MOD_REPLACE */
for (i=0;i<msg->num_elements;i++) {
msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
}
return dsdb_modify(ldb, msg, dsdb_flags);
}
/*
search for attrs on one DN, allowing for dsdb_flags controls
*/
int dsdb_search_dn(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_result **_result,
struct ldb_dn *basedn,
const char * const *attrs,
uint32_t dsdb_flags)
{
int ret;
struct ldb_request *req;
struct ldb_result *res;
res = talloc_zero(mem_ctx, struct ldb_result);
if (!res) {
return ldb_oom(ldb);
}
ret = ldb_build_search_req(&req, ldb, res,
basedn,
LDB_SCOPE_BASE,
NULL,
attrs,
NULL,
res,
ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(res);
return ret;
}
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(res);
return ret;
}
ret = ldb_request(ldb, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
talloc_free(req);
if (ret != LDB_SUCCESS) {
talloc_free(res);
return ret;
}
*_result = res;
return LDB_SUCCESS;
}
/*
search for attrs on one DN, by the GUID of the DN, allowing for
dsdb_flags controls
*/
int dsdb_search_by_dn_guid(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_result **_result,
const struct GUID *guid,
const char * const *attrs,
uint32_t dsdb_flags)
{
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
struct ldb_dn *dn;
int ret;
dn = ldb_dn_new_fmt(tmp_ctx, ldb, "<GUID=%s>", GUID_string(tmp_ctx, guid));
if (dn == NULL) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
ret = dsdb_search_dn(ldb, mem_ctx, _result, dn, attrs, dsdb_flags);
talloc_free(tmp_ctx);
return ret;
}
/*
general search with dsdb_flags for controls
*/
int dsdb_search(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_result **_result,
struct ldb_dn *basedn,
enum ldb_scope scope,
const char * const *attrs,
uint32_t dsdb_flags,
const char *exp_fmt, ...) _PRINTF_ATTRIBUTE(8, 9)
{
int ret;
struct ldb_request *req;
struct ldb_result *res;
va_list ap;
char *expression = NULL;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
/* cross-partitions searches with a basedn break multi-domain support */
SMB_ASSERT(basedn == NULL || (dsdb_flags & DSDB_SEARCH_SEARCH_ALL_PARTITIONS) == 0);
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
if (exp_fmt) {
va_start(ap, exp_fmt);
expression = talloc_vasprintf(tmp_ctx, exp_fmt, ap);
va_end(ap);
if (!expression) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
}
ret = ldb_build_search_req(&req, ldb, tmp_ctx,
basedn,
scope,
expression,
attrs,
NULL,
res,
ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ret = dsdb_request_add_controls(req, dsdb_flags);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
ldb_reset_err_string(ldb);
return ret;
}
ret = ldb_request(ldb, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
if (dsdb_flags & DSDB_SEARCH_ONE_ONLY) {
if (res->count == 0) {
talloc_free(tmp_ctx);
ldb_reset_err_string(ldb);
return ldb_error(ldb, LDB_ERR_NO_SUCH_OBJECT, __func__);
}
if (res->count != 1) {
talloc_free(tmp_ctx);
ldb_reset_err_string(ldb);
return LDB_ERR_CONSTRAINT_VIOLATION;
}
}
*_result = talloc_steal(mem_ctx, res);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
general search with dsdb_flags for controls
returns exactly 1 record or an error
*/
int dsdb_search_one(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_message **msg,
struct ldb_dn *basedn,
enum ldb_scope scope,
const char * const *attrs,
uint32_t dsdb_flags,
const char *exp_fmt, ...) _PRINTF_ATTRIBUTE(8, 9)
{
int ret;
struct ldb_result *res;
va_list ap;
char *expression = NULL;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
dsdb_flags |= DSDB_SEARCH_ONE_ONLY;
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
if (exp_fmt) {
va_start(ap, exp_fmt);
expression = talloc_vasprintf(tmp_ctx, exp_fmt, ap);
va_end(ap);
if (!expression) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
ret = dsdb_search(ldb, tmp_ctx, &res, basedn, scope, attrs,
dsdb_flags, "%s", expression);
} else {
ret = dsdb_search(ldb, tmp_ctx, &res, basedn, scope, attrs,
dsdb_flags, NULL);
}
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
*msg = talloc_steal(mem_ctx, res->msgs[0]);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/* returns back the forest DNS name */
const char *samdb_forest_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
{
const char *forest_name = ldb_dn_canonical_string(mem_ctx,
ldb_get_root_basedn(ldb));
char *p;
if (forest_name == NULL) {
return NULL;
}
p = strchr(forest_name, '/');
if (p) {
*p = '\0';
}
return forest_name;
}
/* returns back the default domain DNS name */
const char *samdb_default_domain_name(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
{
const char *domain_name = ldb_dn_canonical_string(mem_ctx,
ldb_get_default_basedn(ldb));
char *p;
if (domain_name == NULL) {
return NULL;
}
p = strchr(domain_name, '/');
if (p) {
*p = '\0';
}
return domain_name;
}
/*
validate that an DSA GUID belongs to the specified user sid.
The user SID must be a domain controller account (either RODC or
RWDC)
*/
int dsdb_validate_dsa_guid(struct ldb_context *ldb,
const struct GUID *dsa_guid,
const struct dom_sid *sid)
{
/* strategy:
- find DN of record with the DSA GUID in the
configuration partition (objectGUID)
- remove "NTDS Settings" component from DN
- do a base search on that DN for serverReference with
extended-dn enabled
- extract objectSid from resulting serverReference
attribute
- check this sid matches the sid argument
*/
struct ldb_dn *config_dn;
TALLOC_CTX *tmp_ctx = talloc_new(ldb);
struct ldb_message *msg;
const char *attrs1[] = { NULL };
const char *attrs2[] = { "serverReference", NULL };
int ret;
struct ldb_dn *dn, *account_dn;
struct dom_sid sid2;
NTSTATUS status;
config_dn = ldb_get_config_basedn(ldb);
ret = dsdb_search_one(ldb, tmp_ctx, &msg, config_dn, LDB_SCOPE_SUBTREE,
attrs1, 0, "(&(objectGUID=%s)(objectClass=nTDSDSA))", GUID_string(tmp_ctx, dsa_guid));
if (ret != LDB_SUCCESS) {
DEBUG(1,(__location__ ": Failed to find DSA objectGUID %s for sid %s\n",
GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
talloc_free(tmp_ctx);
return ldb_operr(ldb);
}
dn = msg->dn;
if (!ldb_dn_remove_child_components(dn, 1)) {
talloc_free(tmp_ctx);
return ldb_operr(ldb);
}
ret = dsdb_search_one(ldb, tmp_ctx, &msg, dn, LDB_SCOPE_BASE,
attrs2, DSDB_SEARCH_SHOW_EXTENDED_DN,
"(objectClass=server)");
if (ret != LDB_SUCCESS) {
DEBUG(1,(__location__ ": Failed to find server record for DSA with objectGUID %s, sid %s\n",
GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
talloc_free(tmp_ctx);
return ldb_operr(ldb);
}
account_dn = ldb_msg_find_attr_as_dn(ldb, tmp_ctx, msg, "serverReference");
if (account_dn == NULL) {
DEBUG(1,(__location__ ": Failed to find account dn "
"(serverReference) for %s, parent of DSA with "
"objectGUID %s, sid %s\n",
ldb_dn_get_linearized(msg->dn),
GUID_string(tmp_ctx, dsa_guid),
dom_sid_string(tmp_ctx, sid)));
talloc_free(tmp_ctx);
return ldb_operr(ldb);
}
status = dsdb_get_extended_dn_sid(account_dn, &sid2, "SID");
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1,(__location__ ": Failed to find SID for DSA with objectGUID %s, sid %s\n",
GUID_string(tmp_ctx, dsa_guid), dom_sid_string(tmp_ctx, sid)));
talloc_free(tmp_ctx);
return ldb_operr(ldb);
}
if (!dom_sid_equal(sid, &sid2)) {
/* someone is trying to spoof another account */
DEBUG(0,(__location__ ": Bad DSA objectGUID %s for sid %s - expected sid %s\n",
GUID_string(tmp_ctx, dsa_guid),
dom_sid_string(tmp_ctx, sid),
dom_sid_string(tmp_ctx, &sid2)));
talloc_free(tmp_ctx);
return ldb_operr(ldb);
}
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
static const char * const secret_attributes[] = {
DSDB_SECRET_ATTRIBUTES,
NULL
};
/*
check if the attribute belongs to the RODC filtered attribute set
Note that attributes that are in the filtered attribute set are the
ones that _are_ always sent to a RODC
*/
bool dsdb_attr_in_rodc_fas(const struct dsdb_attribute *sa)
{
/* they never get secret attributes */
if (is_attr_in_list(secret_attributes, sa->lDAPDisplayName)) {
return false;
}
/* they do get non-secret critical attributes */
if (sa->schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) {
return true;
}
/* they do get non-secret attributes marked as being in the FAS */
if (sa->searchFlags & SEARCH_FLAG_RODC_ATTRIBUTE) {
return true;
}
/* other attributes are denied */
return false;
}
/* return fsmo role dn and role owner dn for a particular role*/
WERROR dsdb_get_fsmo_role_info(TALLOC_CTX *tmp_ctx,
struct ldb_context *ldb,
uint32_t role,
struct ldb_dn **fsmo_role_dn,
struct ldb_dn **role_owner_dn)
{
int ret;
switch (role) {
case DREPL_NAMING_MASTER:
*fsmo_role_dn = samdb_partitions_dn(ldb, tmp_ctx);
ret = samdb_reference_dn(ldb, tmp_ctx, *fsmo_role_dn, "fSMORoleOwner", role_owner_dn);
if (ret != LDB_SUCCESS) {
DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in Naming Master object - %s",
ldb_errstring(ldb)));
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
break;
case DREPL_INFRASTRUCTURE_MASTER:
*fsmo_role_dn = samdb_infrastructure_dn(ldb, tmp_ctx);
ret = samdb_reference_dn(ldb, tmp_ctx, *fsmo_role_dn, "fSMORoleOwner", role_owner_dn);
if (ret != LDB_SUCCESS) {
DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in Schema Master object - %s",
ldb_errstring(ldb)));
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
break;
case DREPL_RID_MASTER:
ret = samdb_rid_manager_dn(ldb, tmp_ctx, fsmo_role_dn);
if (ret != LDB_SUCCESS) {
DEBUG(0, (__location__ ": Failed to find RID Manager object - %s", ldb_errstring(ldb)));
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
ret = samdb_reference_dn(ldb, tmp_ctx, *fsmo_role_dn, "fSMORoleOwner", role_owner_dn);
if (ret != LDB_SUCCESS) {
DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in RID Manager object - %s",
ldb_errstring(ldb)));
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
break;
case DREPL_SCHEMA_MASTER:
*fsmo_role_dn = ldb_get_schema_basedn(ldb);
ret = samdb_reference_dn(ldb, tmp_ctx, *fsmo_role_dn, "fSMORoleOwner", role_owner_dn);
if (ret != LDB_SUCCESS) {
DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in Schema Master object - %s",
ldb_errstring(ldb)));
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
break;
case DREPL_PDC_MASTER:
*fsmo_role_dn = ldb_get_default_basedn(ldb);
ret = samdb_reference_dn(ldb, tmp_ctx, *fsmo_role_dn, "fSMORoleOwner", role_owner_dn);
if (ret != LDB_SUCCESS) {
DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in Pd Master object - %s",
ldb_errstring(ldb)));
talloc_free(tmp_ctx);
return WERR_DS_DRA_INTERNAL_ERROR;
}
break;
default:
return WERR_DS_DRA_INTERNAL_ERROR;
}
return WERR_OK;
}
const char *samdb_dn_to_dnshostname(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *server_dn)
{
int ldb_ret;
struct ldb_result *res = NULL;
const char * const attrs[] = { "dNSHostName", NULL};
ldb_ret = ldb_search(ldb, mem_ctx, &res,
server_dn,
LDB_SCOPE_BASE,
attrs, NULL);
if (ldb_ret != LDB_SUCCESS) {
DEBUG(4, ("Failed to find dNSHostName for dn %s, ldb error: %s",
ldb_dn_get_linearized(server_dn), ldb_errstring(ldb)));
return NULL;
}
return ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
}
/*
returns true if an attribute is in the filter,
false otherwise, provided that attribute value is provided with the expression
*/
bool dsdb_attr_in_parse_tree(struct ldb_parse_tree *tree,
const char *attr)
{
unsigned int i;
switch (tree->operation) {
case LDB_OP_AND:
case LDB_OP_OR:
for (i=0;i<tree->u.list.num_elements;i++) {
if (dsdb_attr_in_parse_tree(tree->u.list.elements[i],
attr))
return true;
}
return false;
case LDB_OP_NOT:
return dsdb_attr_in_parse_tree(tree->u.isnot.child, attr);
case LDB_OP_EQUALITY:
case LDB_OP_GREATER:
case LDB_OP_LESS:
case LDB_OP_APPROX:
if (ldb_attr_cmp(tree->u.equality.attr, attr) == 0) {
return true;
}
return false;
case LDB_OP_SUBSTRING:
if (ldb_attr_cmp(tree->u.substring.attr, attr) == 0) {
return true;
}
return false;
case LDB_OP_PRESENT:
/* (attrname=*) is not filtered out */
return false;
case LDB_OP_EXTENDED:
if (tree->u.extended.attr &&
ldb_attr_cmp(tree->u.extended.attr, attr) == 0) {
return true;
}
return false;
}
return false;
}
bool is_attr_in_list(const char * const * attrs, const char *attr)
{
unsigned int i;
for (i = 0; attrs[i]; i++) {
if (ldb_attr_cmp(attrs[i], attr) == 0)
return true;
}
return false;
}
int dsdb_werror_at(struct ldb_context *ldb, int ldb_ecode, WERROR werr,
const char *location, const char *func,
const char *reason)
{
if (reason == NULL) {
reason = win_errstr(werr);
}
ldb_asprintf_errstring(ldb, "%08X: %s at %s:%s",
W_ERROR_V(werr), reason, location, func);
return ldb_ecode;
}
/*
map an ldb error code to an approximate NTSTATUS code
*/
NTSTATUS dsdb_ldb_err_to_ntstatus(int err)
{
switch (err) {
case LDB_SUCCESS:
return NT_STATUS_OK;
case LDB_ERR_PROTOCOL_ERROR:
return NT_STATUS_DEVICE_PROTOCOL_ERROR;
case LDB_ERR_TIME_LIMIT_EXCEEDED:
return NT_STATUS_IO_TIMEOUT;
case LDB_ERR_SIZE_LIMIT_EXCEEDED:
return NT_STATUS_BUFFER_TOO_SMALL;
case LDB_ERR_COMPARE_FALSE:
case LDB_ERR_COMPARE_TRUE:
return NT_STATUS_REVISION_MISMATCH;
case LDB_ERR_AUTH_METHOD_NOT_SUPPORTED:
return NT_STATUS_NOT_SUPPORTED;
case LDB_ERR_STRONG_AUTH_REQUIRED:
case LDB_ERR_CONFIDENTIALITY_REQUIRED:
case LDB_ERR_SASL_BIND_IN_PROGRESS:
case LDB_ERR_INAPPROPRIATE_AUTHENTICATION:
case LDB_ERR_INVALID_CREDENTIALS:
case LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS:
case LDB_ERR_UNWILLING_TO_PERFORM:
return NT_STATUS_ACCESS_DENIED;
case LDB_ERR_NO_SUCH_OBJECT:
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
case LDB_ERR_REFERRAL:
case LDB_ERR_NO_SUCH_ATTRIBUTE:
return NT_STATUS_NOT_FOUND;
case LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION:
return NT_STATUS_NOT_SUPPORTED;
case LDB_ERR_ADMIN_LIMIT_EXCEEDED:
return NT_STATUS_BUFFER_TOO_SMALL;
case LDB_ERR_UNDEFINED_ATTRIBUTE_TYPE:
case LDB_ERR_INAPPROPRIATE_MATCHING:
case LDB_ERR_CONSTRAINT_VIOLATION:
case LDB_ERR_INVALID_ATTRIBUTE_SYNTAX:
case LDB_ERR_INVALID_DN_SYNTAX:
case LDB_ERR_NAMING_VIOLATION:
case LDB_ERR_OBJECT_CLASS_VIOLATION:
case LDB_ERR_NOT_ALLOWED_ON_NON_LEAF:
case LDB_ERR_NOT_ALLOWED_ON_RDN:
return NT_STATUS_INVALID_PARAMETER;
case LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS:
case LDB_ERR_ENTRY_ALREADY_EXISTS:
return NT_STATUS_ERROR_DS_OBJ_STRING_NAME_EXISTS;
case LDB_ERR_BUSY:
return NT_STATUS_NETWORK_BUSY;
case LDB_ERR_ALIAS_PROBLEM:
case LDB_ERR_ALIAS_DEREFERENCING_PROBLEM:
case LDB_ERR_UNAVAILABLE:
case LDB_ERR_LOOP_DETECT:
case LDB_ERR_OBJECT_CLASS_MODS_PROHIBITED:
case LDB_ERR_AFFECTS_MULTIPLE_DSAS:
case LDB_ERR_OTHER:
case LDB_ERR_OPERATIONS_ERROR:
break;
}
return NT_STATUS_UNSUCCESSFUL;
}
/*
create a new naming context that will hold a partial replica
*/
int dsdb_create_partial_replica_NC(struct ldb_context *ldb, struct ldb_dn *dn)
{
TALLOC_CTX *tmp_ctx = talloc_new(ldb);
struct ldb_message *msg;
int ret;
msg = ldb_msg_new(tmp_ctx);
if (msg == NULL) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
msg->dn = dn;
ret = ldb_msg_add_string(msg, "objectClass", "top");
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
/* [MS-DRSR] implies that we should only add the 'top'
* objectclass, but that would cause lots of problems with our
* objectclass code as top is not structural, so we add
* 'domainDNS' as well to keep things sane. We're expecting
* this new NC to be of objectclass domainDNS after
* replication anyway
*/
ret = ldb_msg_add_string(msg, "objectClass", "domainDNS");
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
ret = ldb_msg_add_fmt(msg, "instanceType", "%u",
INSTANCE_TYPE_IS_NC_HEAD|
INSTANCE_TYPE_NC_ABOVE|
INSTANCE_TYPE_UNINSTANT);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ldb_oom(ldb);
}
ret = dsdb_add(ldb, msg, DSDB_MODIFY_PARTIAL_REPLICA);
if (ret != LDB_SUCCESS && ret != LDB_ERR_ENTRY_ALREADY_EXISTS) {
DEBUG(0,("Failed to create new NC for %s - %s (%s)\n",
ldb_dn_get_linearized(dn),
ldb_errstring(ldb), ldb_strerror(ret)));
talloc_free(tmp_ctx);
return ret;
}
DEBUG(1,("Created new NC for %s\n", ldb_dn_get_linearized(dn)));
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
/*
* Return the effective badPwdCount
*
* This requires that the user_msg have (if present):
* - badPasswordTime
* - badPwdCount
*
* This also requires that the domain_msg have (if present):
* - lockOutObservationWindow
*/
static int dsdb_effective_badPwdCount(const struct ldb_message *user_msg,
int64_t lockOutObservationWindow,
NTTIME now)
{
int64_t badPasswordTime;
badPasswordTime = ldb_msg_find_attr_as_int64(user_msg, "badPasswordTime", 0);
if (badPasswordTime - lockOutObservationWindow >= now) {
return ldb_msg_find_attr_as_int(user_msg, "badPwdCount", 0);
} else {
return 0;
}
}
/*
* Returns a user's PSO, or NULL if none was found
*/
static struct ldb_result *lookup_user_pso(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
const struct ldb_message *user_msg,
const char * const *attrs)
{
struct ldb_result *res = NULL;
struct ldb_dn *pso_dn = NULL;
int ret;
/* if the user has a PSO that applies, then use the PSO's setting */
pso_dn = ldb_msg_find_attr_as_dn(sam_ldb, mem_ctx, user_msg,
"msDS-ResultantPSO");
if (pso_dn != NULL) {
ret = dsdb_search_dn(sam_ldb, mem_ctx, &res, pso_dn, attrs, 0);
if (ret != LDB_SUCCESS) {
/*
* log the error. The caller should fallback to using
* the default domain password settings
*/
DBG_ERR("Error retrieving msDS-ResultantPSO %s for %s",
ldb_dn_get_linearized(pso_dn),
ldb_dn_get_linearized(user_msg->dn));
}
talloc_free(pso_dn);
}
return res;
}
/*
* Return the effective badPwdCount
*
* This requires that the user_msg have (if present):
* - badPasswordTime
* - badPwdCount
* - msDS-ResultantPSO
*/
int samdb_result_effective_badPwdCount(struct ldb_context *sam_ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *domain_dn,
const struct ldb_message *user_msg)
{
struct timeval tv_now = timeval_current();
NTTIME now = timeval_to_nttime(&tv_now);
int64_t lockOutObservationWindow;
struct ldb_result *res = NULL;
const char *attrs[] = { "msDS-LockoutObservationWindow",
NULL };
res = lookup_user_pso(sam_ldb, mem_ctx, user_msg, attrs);
if (res != NULL) {
lockOutObservationWindow =
ldb_msg_find_attr_as_int64(res->msgs[0],
"msDS-LockoutObservationWindow",
DEFAULT_OBSERVATION_WINDOW);
talloc_free(res);
} else {
/* no PSO was found, lookup the default domain setting */
lockOutObservationWindow =
samdb_search_int64(sam_ldb, mem_ctx, 0, domain_dn,
"lockOutObservationWindow", NULL);
}
return dsdb_effective_badPwdCount(user_msg, lockOutObservationWindow, now);
}
/*
* Returns the lockoutThreshold that applies. If a PSO is specified, then that
* setting is used over the domain defaults
*/
static int64_t get_lockout_threshold(struct ldb_message *domain_msg,
struct ldb_message *pso_msg)
{
if (pso_msg != NULL) {
return ldb_msg_find_attr_as_int(pso_msg,
"msDS-LockoutThreshold", 0);
} else {
return ldb_msg_find_attr_as_int(domain_msg,
"lockoutThreshold", 0);
}
}
/*
* Returns the lockOutObservationWindow that applies. If a PSO is specified,
* then that setting is used over the domain defaults
*/
static int64_t get_lockout_observation_window(struct ldb_message *domain_msg,
struct ldb_message *pso_msg)
{
if (pso_msg != NULL) {
return ldb_msg_find_attr_as_int64(pso_msg,
"msDS-LockoutObservationWindow",
DEFAULT_OBSERVATION_WINDOW);
} else {
return ldb_msg_find_attr_as_int64(domain_msg,
"lockOutObservationWindow",
DEFAULT_OBSERVATION_WINDOW);
}
}
/*
* Prepare an update to the badPwdCount and associated attributes.
*
* This requires that the user_msg have (if present):
* - objectSid
* - badPasswordTime
* - badPwdCount
*
* This also requires that the domain_msg have (if present):
* - pwdProperties
* - lockoutThreshold
* - lockOutObservationWindow
*
* This also requires that the pso_msg have (if present):
* - msDS-LockoutThreshold
* - msDS-LockoutObservationWindow
*/
NTSTATUS dsdb_update_bad_pwd_count(TALLOC_CTX *mem_ctx,
struct ldb_context *sam_ctx,
struct ldb_message *user_msg,
struct ldb_message *domain_msg,
struct ldb_message *pso_msg,
struct ldb_message **_mod_msg)
{
int ret, badPwdCount;
unsigned int i;
int64_t lockoutThreshold, lockOutObservationWindow;
struct dom_sid *sid;
struct timeval tv_now = timeval_current();
NTTIME now = timeval_to_nttime(&tv_now);
NTSTATUS status;
uint32_t pwdProperties, rid = 0;
struct ldb_message *mod_msg;
sid = samdb_result_dom_sid(mem_ctx, user_msg, "objectSid");
pwdProperties = ldb_msg_find_attr_as_uint(domain_msg,
"pwdProperties", -1);
if (sid && !(pwdProperties & DOMAIN_PASSWORD_LOCKOUT_ADMINS)) {
status = dom_sid_split_rid(NULL, sid, NULL, &rid);
if (!NT_STATUS_IS_OK(status)) {
/*
* This can't happen anyway, but always try
* and update the badPwdCount on failure
*/
rid = 0;
}
}
TALLOC_FREE(sid);
/*
* Work out if we are doing password lockout on the domain.
* Also, the built in administrator account is exempt:
* http://msdn.microsoft.com/en-us/library/windows/desktop/aa375371%28v=vs.85%29.aspx
*/
lockoutThreshold = get_lockout_threshold(domain_msg, pso_msg);
if (lockoutThreshold == 0 || (rid == DOMAIN_RID_ADMINISTRATOR)) {
DEBUG(5, ("Not updating badPwdCount on %s after wrong password\n",
ldb_dn_get_linearized(user_msg->dn)));
return NT_STATUS_OK;
}
mod_msg = ldb_msg_new(mem_ctx);
if (mod_msg == NULL) {
return NT_STATUS_NO_MEMORY;
}
mod_msg->dn = ldb_dn_copy(mod_msg, user_msg->dn);
if (mod_msg->dn == NULL) {
TALLOC_FREE(mod_msg);
return NT_STATUS_NO_MEMORY;
}
lockOutObservationWindow = get_lockout_observation_window(domain_msg,
pso_msg);
badPwdCount = dsdb_effective_badPwdCount(user_msg, lockOutObservationWindow, now);
badPwdCount++;
ret = samdb_msg_add_int(sam_ctx, mod_msg, mod_msg, "badPwdCount", badPwdCount);
if (ret != LDB_SUCCESS) {
TALLOC_FREE(mod_msg);
return NT_STATUS_NO_MEMORY;
}
ret = samdb_msg_add_int64(sam_ctx, mod_msg, mod_msg, "badPasswordTime", now);
if (ret != LDB_SUCCESS) {
TALLOC_FREE(mod_msg);
return NT_STATUS_NO_MEMORY;
}
if (badPwdCount >= lockoutThreshold) {
ret = samdb_msg_add_int64(sam_ctx, mod_msg, mod_msg, "lockoutTime", now);
if (ret != LDB_SUCCESS) {
TALLOC_FREE(mod_msg);
return NT_STATUS_NO_MEMORY;
}
DEBUGC( DBGC_AUTH, 1, ("Locked out user %s after %d wrong passwords\n",
ldb_dn_get_linearized(user_msg->dn), badPwdCount));
} else {
DEBUGC( DBGC_AUTH, 5, ("Updated badPwdCount on %s after %d wrong passwords\n",
ldb_dn_get_linearized(user_msg->dn), badPwdCount));
}
/* mark all the message elements as LDB_FLAG_MOD_REPLACE */
for (i=0; i< mod_msg->num_elements; i++) {
mod_msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
}
*_mod_msg = mod_msg;
return NT_STATUS_OK;
}
/**
* Sets defaults for a User object
* List of default attributes set:
* accountExpires, badPasswordTime, badPwdCount,
* codePage, countryCode, lastLogoff, lastLogon
* logonCount, pwdLastSet
*/
int dsdb_user_obj_set_defaults(struct ldb_context *ldb,
struct ldb_message *usr_obj,
struct ldb_request *req)
{
size_t i;
int ret;
const struct attribute_values {
const char *name;
const char *value;
const char *add_value;
const char *mod_value;
const char *control;
unsigned add_flags;
unsigned mod_flags;
} map[] = {
{
.name = "accountExpires",
.add_value = "9223372036854775807",
.mod_value = "0",
},
{
.name = "badPasswordTime",
.value = "0"
},
{
.name = "badPwdCount",
.value = "0"
},
{
.name = "codePage",
.value = "0"
},
{
.name = "countryCode",
.value = "0"
},
{
.name = "lastLogoff",
.value = "0"
},
{
.name = "lastLogon",
.value = "0"
},
{
.name = "logonCount",
.value = "0"
},
{
.name = "logonHours",
.add_flags = DSDB_FLAG_INTERNAL_FORCE_META_DATA,
},
{
.name = "pwdLastSet",
.value = "0",
.control = DSDB_CONTROL_PASSWORD_DEFAULT_LAST_SET_OID,
},
{
.name = "adminCount",
.mod_value = "0",
},
{
.name = "operatorCount",
.mod_value = "0",
},
};
for (i = 0; i < ARRAY_SIZE(map); i++) {
bool added = false;
const char *value = NULL;
unsigned flags = 0;
if (req != NULL && req->operation == LDB_ADD) {
value = map[i].add_value;
flags = map[i].add_flags;
} else {
value = map[i].mod_value;
flags = map[i].mod_flags;
}
if (value == NULL) {
value = map[i].value;
}
if (value != NULL) {
flags |= LDB_FLAG_MOD_ADD;
}
if (flags == 0) {
continue;
}
ret = samdb_find_or_add_attribute_ex(ldb, usr_obj,
map[i].name,
value, flags,
&added);
if (ret != LDB_SUCCESS) {
return ret;
}
if (req != NULL && added && map[i].control != NULL) {
ret = ldb_request_add_control(req,
map[i].control,
false, NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
}
}
return LDB_SUCCESS;
}
/**
* Sets 'sAMAccountType on user object based on userAccountControl
* @param ldb Current ldb_context
* @param usr_obj ldb_message representing User object
* @param user_account_control Value for userAccountControl flags
* @param account_type_p Optional pointer to account_type to return
* @return LDB_SUCCESS or LDB_ERR* code on failure
*/
int dsdb_user_obj_set_account_type(struct ldb_context *ldb, struct ldb_message *usr_obj,
uint32_t user_account_control, uint32_t *account_type_p)
{
int ret;
uint32_t account_type;
struct ldb_message_element *el;
account_type = ds_uf2atype(user_account_control);
if (account_type == 0) {
ldb_set_errstring(ldb, "dsdb: Unrecognized account type!");
return LDB_ERR_UNWILLING_TO_PERFORM;
}
ret = samdb_msg_add_uint(ldb, usr_obj, usr_obj,
"sAMAccountType",
account_type);
if (ret != LDB_SUCCESS) {
return ret;
}
el = ldb_msg_find_element(usr_obj, "sAMAccountType");
el->flags = LDB_FLAG_MOD_REPLACE;
if (account_type_p) {
*account_type_p = account_type;
}
return LDB_SUCCESS;
}
/**
* Determine and set primaryGroupID based on userAccountControl value
* @param ldb Current ldb_context
* @param usr_obj ldb_message representing User object
* @param user_account_control Value for userAccountControl flags
* @param group_rid_p Optional pointer to group RID to return
* @return LDB_SUCCESS or LDB_ERR* code on failure
*/
int dsdb_user_obj_set_primary_group_id(struct ldb_context *ldb, struct ldb_message *usr_obj,
uint32_t user_account_control, uint32_t *group_rid_p)
{
int ret;
uint32_t rid;
struct ldb_message_element *el;
rid = ds_uf2prim_group_rid(user_account_control);
ret = samdb_msg_add_uint(ldb, usr_obj, usr_obj,
"primaryGroupID", rid);
if (ret != LDB_SUCCESS) {
return ret;
}
el = ldb_msg_find_element(usr_obj, "primaryGroupID");
el->flags = LDB_FLAG_MOD_REPLACE;
if (group_rid_p) {
*group_rid_p = rid;
}
return LDB_SUCCESS;
}
/**
* Returns True if the source and target DNs both have the same naming context,
* i.e. they're both in the same partition.
*/
bool dsdb_objects_have_same_nc(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *source_dn,
struct ldb_dn *target_dn)
{
TALLOC_CTX *tmp_ctx;
struct ldb_dn *source_nc = NULL;
struct ldb_dn *target_nc = NULL;
int ret;
bool same_nc = true;
tmp_ctx = talloc_new(mem_ctx);
ret = dsdb_find_nc_root(ldb, tmp_ctx, source_dn, &source_nc);
/* fix clang warning */
if (source_nc == NULL) {
ret = LDB_ERR_OTHER;
}
if (ret != LDB_SUCCESS) {
DBG_ERR("Failed to find base DN for source %s\n",
ldb_dn_get_linearized(source_dn));
talloc_free(tmp_ctx);
return true;
}
ret = dsdb_find_nc_root(ldb, tmp_ctx, target_dn, &target_nc);
/* fix clang warning */
if (target_nc == NULL) {
ret = LDB_ERR_OTHER;
}
if (ret != LDB_SUCCESS) {
DBG_ERR("Failed to find base DN for target %s\n",
ldb_dn_get_linearized(target_dn));
talloc_free(tmp_ctx);
return true;
}
same_nc = (ldb_dn_compare(source_nc, target_nc) == 0);
talloc_free(tmp_ctx);
return same_nc;
}
/*
* Context for dsdb_count_domain_callback
*/
struct dsdb_count_domain_context {
/*
* Number of matching records
*/
size_t count;
/*
* sid of the domain that the records must belong to.
* if NULL records can belong to any domain.
*/
struct dom_sid *dom_sid;
};
/*
* @brief ldb aysnc callback for dsdb_domain_count.
*
* count the number of records in the database matching an LDAP query,
* optionally filtering for domain membership.
*
* @param [in,out] req the ldb request being processed
* req->context contains:
* count The number of matching records
* dom_sid The domain sid, if present records must belong
* to the domain to be counted.
*@param [in,out] ares The query result.
*
* @return an LDB error code
*
*/
static int dsdb_count_domain_callback(
struct ldb_request *req,
struct ldb_reply *ares)
{
if (ares == NULL) {
return ldb_request_done(req, LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
int error = ares->error;
TALLOC_FREE(ares);
return ldb_request_done(req, error);
}
switch (ares->type) {
case LDB_REPLY_ENTRY:
{
struct dsdb_count_domain_context *context = NULL;
ssize_t ret;
bool in_domain;
struct dom_sid sid;
const struct ldb_val *v;
context = req->context;
if (context->dom_sid == NULL) {
context->count++;
break;
}
v = ldb_msg_find_ldb_val(ares->message, "objectSid");
if (v == NULL) {
break;
}
ret = sid_parse(v->data, v->length, &sid);
if (ret == -1) {
break;
}
in_domain = dom_sid_in_domain(context->dom_sid, &sid);
if (!in_domain) {
break;
}
context->count++;
break;
}
case LDB_REPLY_REFERRAL:
break;
case LDB_REPLY_DONE:
TALLOC_FREE(ares);
return ldb_request_done(req, LDB_SUCCESS);
}
TALLOC_FREE(ares);
return LDB_SUCCESS;
}
/*
* @brief Count the number of records matching a query.
*
* Count the number of entries in the database matching the supplied query,
* optionally filtering only those entries belonging to the supplied domain.
*
* @param ldb [in] Current ldb context
* @param count [out] Pointer to the count
* @param base [in] The base dn for the quey
* @param dom_sid [in] The domain sid, if non NULL records that are not a member
* of the domain are ignored.
* @param scope [in] Search scope.
* @param exp_fmt [in] format string for the query.
*
* @return LDB_STATUS code.
*/
int PRINTF_ATTRIBUTE(6, 7) dsdb_domain_count(
struct ldb_context *ldb,
size_t *count,
struct ldb_dn *base,
struct dom_sid *dom_sid,
enum ldb_scope scope,
const char *exp_fmt, ...)
{
TALLOC_CTX *tmp_ctx = NULL;
struct ldb_request *req = NULL;
struct dsdb_count_domain_context *context = NULL;
char *expression = NULL;
const char *object_sid[] = {"objectSid", NULL};
const char *none[] = {NULL};
va_list ap;
int ret;
*count = 0;
tmp_ctx = talloc_new(ldb);
context = talloc_zero(tmp_ctx, struct dsdb_count_domain_context);
if (context == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
context->dom_sid = dom_sid;
if (exp_fmt) {
va_start(ap, exp_fmt);
expression = talloc_vasprintf(tmp_ctx, exp_fmt, ap);
va_end(ap);
if (expression == NULL) {
TALLOC_FREE(context);
TALLOC_FREE(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
}
ret = ldb_build_search_req(
&req,
ldb,
tmp_ctx,
base,
scope,
expression,
(dom_sid == NULL) ? none : object_sid,
NULL,
context,
dsdb_count_domain_callback,
NULL);
ldb_req_set_location(req, "dsdb_domain_count");
if (ret != LDB_SUCCESS) goto done;
ret = ldb_request(ldb, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
if (ret == LDB_SUCCESS) {
*count = context->count;
}
}
done:
TALLOC_FREE(expression);
TALLOC_FREE(req);
TALLOC_FREE(context);
TALLOC_FREE(tmp_ctx);
return ret;
}
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