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-rw-r--r--source4/dsdb/samdb/ldb_modules/password_hash.c34
1 files changed, 26 insertions, 8 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/password_hash.c b/source4/dsdb/samdb/ldb_modules/password_hash.c
index 457af56b85..42ee65dc18 100644
--- a/source4/dsdb/samdb/ldb_modules/password_hash.c
+++ b/source4/dsdb/samdb/ldb_modules/password_hash.c
@@ -95,12 +95,12 @@ struct ph_context {
struct ldb_reply *search_res;
struct dsdb_control_password_change_status *status;
+ struct dsdb_control_password_change *change;
bool pwd_reset;
bool change_status;
bool hash_values;
- bool change;
};
@@ -1436,7 +1436,7 @@ static int check_password_restrictions(struct setup_password_fields_io *io)
ldb = ldb_module_get_ctx(io->ac->module);
/* First check the old password is correct, for password changes */
- if (!io->ac->pwd_reset && !io->ac->change) {
+ if (!io->ac->pwd_reset) {
bool nt_hash_checked = false;
/* we need the old nt or lm hash given by the client */
@@ -1858,6 +1858,27 @@ static int setup_io(struct ph_context *ac,
sizeof(io->og.lm_hash->hash)));
}
+ /*
+ * Handles the password change control if it's specified. It has the
+ * precedance and overrides already specified old password values of
+ * change requests (but that shouldn't happen since the control is
+ * fully internal and only used in conjunction with replace requests!).
+ */
+ if (ac->change != NULL) {
+ io->og.nt_hash = NULL;
+ if (ac->change->old_nt_pwd_hash != NULL) {
+ io->og.nt_hash = talloc_memdup(io->ac,
+ ac->change->old_nt_pwd_hash,
+ sizeof(struct samr_Password));
+ }
+ io->og.lm_hash = NULL;
+ if (lpcfg_lanman_auth(lp_ctx) && (ac->change->old_lm_pwd_hash != NULL)) {
+ io->og.lm_hash = talloc_memdup(io->ac,
+ ac->change->old_lm_pwd_hash,
+ sizeof(struct samr_Password));
+ }
+ }
+
/* refuse the change if someone wants to change the clear-
text and supply his own hashes at the same time... */
if ((io->n.cleartext_utf8 || io->n.cleartext_utf16)
@@ -1913,10 +1934,8 @@ static int setup_io(struct ph_context *ac,
ac->pwd_reset = true;
} else if (ac->req->operation == LDB_MODIFY) {
if (io->og.cleartext_utf8 || io->og.cleartext_utf16
- || io->og.nt_hash || io->og.lm_hash
- || ac->change) {
- /* If we have an old password or the "change old
- * password checked" control specified then for sure it
+ || io->og.nt_hash || io->og.lm_hash) {
+ /* If we have an old password specified then for sure it
* is a user "password change" */
ac->pwd_reset = false;
} else {
@@ -1975,11 +1994,10 @@ static void ph_apply_controls(struct ph_context *ac)
ctrl->critical = false;
}
- ac->change = false;
ctrl = ldb_request_get_control(ac->req,
DSDB_CONTROL_PASSWORD_CHANGE_OID);
if (ctrl != NULL) {
- ac->change = true;
+ ac->change = (struct dsdb_control_password_change *) ctrl->data;
/* Mark the "change" control as uncritical (done) */
ctrl->critical = false;